quarrying are separated from manufacturing and mechanical pursuits; trade and transportation are distinct from each other. The headings as here used are:

The term "Domestic and personal service" includes besides domestic servants certain classes of persons not professional who serve the general public, such as policemen, city firemen, and employees at places of amusement.

Number of females 16 years of age or over in each specified industry, by general nativity and race of individual: Study of households. Tables 10, 73, 123, 173, 222, 271, 331, and 384.—These tables are similar to Tables 9, 72, 122, 172, 221, 270, 330, and 383, relating to males.

Number of male employees 18 years of age or over earning each specified amount per week, by general nativity and race: Study of employees. Tables 11, 54, 74, 124, 174, 223, 272, 315, 365, and 385.Employees are here classified according to the amount of their earnings. In some industries earnings are reported by the week, and in others by the day. Where employment is on the time basis the data are for "rate of pay;" where employment is on the piece basis the data are for "earnings."

Number of male employees 14 and under 18 years of age earning each specified amount per week, by general nativity and race: Study of employees. Tables 12, 55, 75, 125, 175, 224, 273, 316, 366, and 386.These tables are similar to Tables 11, 54, 74, 124, 174, 223, 272, 315, 365, and 385, relating to earnings of males 18 years of age or over. In practically all industries the number of employees under 14 was too small for tabulation.

Number of male heads of families earning each specified amount per year, by general nativity and race of individual: Study of households. Tables 13, 76, 126, 176, 225, 274, 332, and 387.-These tables form a part of the study of family incomes. The information relative to income was secured for the year ending at the time of the agent's visit.

In the "selection of families" for the compilation of data concerning family income, the following classes were omitted:

(1) Families established less than one year.

(2) Families living two or more per household under complicated financial arrangements, so that exact income from boarders or other sources within the household are uncertain.

(3) Families with earnings or contributions representing entire earnings of members who are profit earners or whose net earnings are for any other reason uncertain. That part of the income in this study represented by earnings is net.

Practically all of the heads of families included in these tables are. also heads of households. They are here classified according to the amount of their earnings for the year.

Yearly earnings (approximate) of males 18 years of age or over, by general nativity and race of individual: Study of households. Tables 14, 77, 127, 177, 226, 275, 333, and 388.-Male wage-earners are here classified according to the amount of their earnings for the year ending at the time of the agent's visit. Persons who receive board and lodging in addition to a money wage and persons who receive tips or other perquisites over and above a stipulated wage are not included in these tables.

Amount of family income per year, by general nativity and race of head of family: Study of households. Tables 15, 78, 128, 178, 227, 276, 334, and 389.-The families included in these tables are the same as in Tables 13, 76, 126, 176, 225, 274, 332, and 387. These families are here classified according to the amount of total income for the year from all sources. Tables 17, 80, 130, 180, 229, 278, 336, and 391 show the sources of this income. Income from "boarders or lodgers" and in some cases from "other sources" is gross.

Yearly earnings (approximate) of females 18 years of age or over, by general nativity and race of individual: Study of households. Tables 16, 79, 129, 179, 228, 277, 335, and 390.-These tables are similar to Tables 14, 77, 127, 177, 226, 275, 333, and 388, which relate to earnings of males.

Number of families having an income within the year from husband, wife, children, boarders or lodgers, and other sources, by general nativity and race of head of family: Study of households. Tables 17, 80, 130, 180, 229, 278, 336, and 391.-The families included in these tables are the same as in Tables 13, 76, 126, 176, 225, 274, 332, and 387. The number of families with income from earnings of husband, the number with income from earnings of wife, etc., are shown here. The terms "husband" and "wife" include the widowed, divorced, and deserted. The principal items under "Other sources are (1) receipts from investments, which, in the great majority of cases, are in the form of rentals, and (2) contributions of friends or relatives, who pay either more or less than the rates of boarders or lodgers. Attention is called to the fact that the family may have had income from some source, for example, from boarders or lodgers, within the year, but not at the time the schedule was taken.

Source of family income in detail, by general nativity and race of head of family: Study of households. Tables 18,81, 131, 181, 230, 279, 337, and 392.-The families included in these tables are the same as in Tables 13, 76, 126, 176, 225, 274, 332, and 387. They are classified here according to the source or combination of sources upon which the family has been wholly dependent for income within the year ending with the taking of the schedule. The four items which make up all incomes except those entered in the last column of these tables are earnings of husband, earnings of wife, contributions of children, and payments of boarders or lodgers. It will be noted that all families deriving their entire income from husband, wife, and children have a net income and that all incomes including the payments of boarders or lodgers are gross; also that all families having any part of their income from money invested appear in the last column of these tables.

Months worked during the past year by persons 16 years of age or over employed away from home, by sex and by general nativity and race of

individual: Study of households. Tables 19, 82, 132, 182, 231, 280, 338, and 393.-Members of households of working age who have been employed outside of the home within the year ending with the taking of the schedule are here classified according to whether they have worked under three months, three and under four months, four and under five months, etc. For the purposes of these tables, all cases of part-time employment have been reduced to a full-time basis; for example, an employee who has worked seven months on half time is counted as having worked three and one-half months. The data are shown for males and females separately.

Number and class of households, by general nativity and race of head of household: Study of households. Tables 20, 83, 133, 183, 232, 281, 339, and 394.-All households are here divided into "family households," or households where a family is present, and "group households," or households composed of a group of persons, no family included. Family households are further classified as being with or without boarders or lodgers. Family households with neither boarders nor lodgers are subdivided into those consisting of a single family and those consisting of two or more families living in the same apartment and sharing one or more rooms. Family households with boarders or lodgers are subdivided into those who keep boarders and those who keep only lodgers. Households keeping both boarders and lodgers are here entered as households with boarders. "Boardare persons to whom both food and lodging are furnished.

ers"

Number of households paying each specified rent per month per apartment, by general nativity and race of head of household: Study of households. Tables 21, 84, 134, 184, 233, 282, 340, and 395.-In these tables appear only the renting households which report the rent paid for the unfurnished rooms which they use for living purposes. The following classes are thus excluded from these tables:

1. Households which rent apartment furnished.

2. Households which pay an undivided sum for apartment and place of busi

ness.

3. Resident landlords who pay an undivided sum for the apartment they occupy and other apartments which they sublet.

4. Households which pay "ground rent."

Number of households paying each specified rent per month per room, by general nativity and race of head of household: Study of households. Tables 22, 85, 135, 185, 234, 283, 341, and 396.—The households included in these tables are the same as in Tables 21, 84, 134, 184, 233, 282, 340, and 395.

Number of households paying each specified rent per month per person, by general nativity and race of head of household: Study of households. Tables 23, 86, 136, 186, 235, 284, 342, and 397.-The households included in these tables are the same as in Tables 21, 84, 134, 184, 233, 282, 340, and 395.

Number of households keeping boarders and lodgers and number of boarders and lodgers, by general nativity and race of head of household: Study of households. Tables 24, 87, 137, 187, 236, 285, 343, and 398.— These tables show the number of households keeping boarders and the number keeping only lodgers; they also show the total number of boarders and of lodgers. "Boarders" both sleep and eat with the household. Households which keep lodgers in addition to

boarders are classified with the households keeping boarders. Among certain races it is customary to include one of the following accommodations with the nominal price of lodging: (1) Coffee or soup is served once a day; (2) the lodger is allowed the privilege of cooking his food on the kitchen stove; (3) the housewife buys the lodger's food, having the price charged in his account book, and prepares the food for him. Persons with such financial arrangements consider themselves lodgers and have been classified as such in these tables.

Number of persons per household in apartments of each specified size, by general nativity and race of head of household: Study of households. Tables 25, 88, 138, 188, 237, 286, 344, and 399.-Households are here classified according to the number of rooms which they occupy and are further classified according to the number of persons of which they are composed. Rooms used exclusively for business purposes, although connected with the apartment, are not counted in the number of rooms per apartment. As before stated, only such persons as sleep in the apartment are considered members of the household.

Number of households occupying apartments of each specified number of rooms, by general nativity andrace of head of household: Study of households. Tables 26, 89, 139, 189, 238, 287, 345, and 400.-These tables summarize a part of the data of Tables 25, 88, 138, 188, 237, 286, 344, and 399. Households are classified here according to the number of rooms they occupy.

Number of households and number of persons in apartments of each specified number of rooms, by general nativity and race of head of household: Study of households. Tables 27, 90, 140, 190, 239, 288, 346, and 401.-These tables summarize part of the data in Tables 25, 88, 138, 188, 237, 286, 344, and 399. They give the total number of households and the total number of persons in apartments of each specified size.

Number of households of each specified number of persons, by general nativity and race of head of household: Study of households. Tables 28; 91, 141, 191, 240, 289, 347, and 402.-These tables summarize part of the data in Tables 25, 88, 138, 188, 237, 286, 344, and 399. Households are here classified according to the number of persons in the household.

Persons per room, by general nativity and race of head of household: Study of households. Tables 29, 92, 142, 192, 241, 290, 348, and 403.– These tables show the number of households which average less than one person per room, one and less than two persons per room, two and less than three persons per room, etc. They also show the average number of persons per household and per room for all households studied.

Persons per sleeping room, by general nativity and race of head of household: Study of households. Tables 30, 93, 143, 193, 242, 291, 349, and 404.-These tables present the data relative to persons per sleeping room. Only rooms which are regularly used for sleeping purposes are here considered sleeping rooms. The tables are similar to Tables 29, 92, 142, 192, 241, 290, 348, and 403.

Number of households regularly sleeping in all except each specified number of rooms, by general nativity and race of head of household: Study of households. Tables 31, 94, 144, 194, 243, 292, 350, and 405.—

These tables classify households according to the number of rooms left for living purposes, after the number of sleeping rooms has been deducted.

Literacy of male employees, by general nativity and race: Study of employees. Tables 32, 56, 95, 145, 195, 244, 293, 317, and 406.These tables show the number of employees who read some language and the number who both read and write some language.

Literacy of persons 10 years of age or over, by sex and general nativity and race of individual: Study of households. Tables 33, 96, 146, 196, 245, 294, 351, and 407.-These tables, which are concerned with members of households, are similar to Tables 32, 56, 95, 145, 195, 244, 293, 317, and 406, relating to employees.

Literacy of foreign-born persons 10 years of age or over, by sex, years in the United States, and race of individual: Study of households. Tables 34, 97, 147, 197, 246, 295, 352, and 408.-These tables classify foreign-born persons, male and female, according to the number of years since their first arrival in the United States. The classes are: Under five years, five to nine years, and ten years or over. tables show under each of the three groups the number of persons who can read some language and the number who can both read and write some language.

These

Literacy of foreign-born persons 10 years of age or over, by sex, age at time of coming to the United States, and race of individual: Study of households. Tables 35, 98, 148, 198, 247, 296, 353, and 409.—These tables classify foreign-born persons, male and female, according to whether they were under 14 years of age or 14 years of age or over at the time of their first arrival in the United States, and show the number in each group who can read some language and the number who can both read and write some language.

Conjugal condition of male employees, by age groups and general nativity and race: Study of employees. Tables 36, 57, 99, 149, 199, 248, 297, 318, 368, and 410. For the purposes of these tables employees of each sex are divided into four age groups-16 to 19 years, 20 to 29 years, 30 to 44 years, and 45 years or over and are further classified according to whether they are single, married, or widowed. With the widowed are included the relatively few persons who are divorced or deserted.

Conjugal condition, by sex, age groups, and general nativity and race of individual: Study of households. Tables 37, 100, 150, 200, 249, 298, 354, and 411.-These tables, which are concerned with members of households 16 years of age or over, are similar to Tables 36, 99, 149, 199, 248, 297, 318, 368, and 410, relating to males.

Location of wives of foreign-born employees, by race of husband: Study of employees. Tables 38, 58, 101, 151, 201, 250, 299, 319, and 412. These tables show the number of foreign-born married employees who report wife in the United States and the number who report wife abroad. The tabulation is by the race of the employee.

Visits abroad made by foreign-born male employees, by years in the United States and race: Study of employees. Tables 39, 59, 102, 152, 202, 300, 320, 370, and 413.-Male employees are here classified according to the number of years since their first arrival in the United States. The classes are: Under five years, five to nine years, and ten years or over. Under each group employees are classified