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For almost two years experimental work has been in progress on the development and manufacture of this new application of the Rotary eccentric principle of pump construction, as a result of which we are able to announce The Smallest, Most Efficient and Most Economical Outfit
For Obtaining a Vacuum of 0.001 mm.
For Completo Descriptions and Pricos, send for Bulletin No. 928
CENTRAL SCIENTIFIC COMPANY 460 EAST OHIO STREET
CHICAGO, U. S. A.
These balances are especially suited for weighings which require a fairly high degree of accuracy, the sensitivity being 2 mgm. under full load.
Capacity is 100 gms.; beam 200 mm. with adjustable screws at both ends; eccentric beam lifting device; plumb bob for leveling; three leveling screws for balance rests; bows 90 mm. wide; pans 80 mm. in diameter. The case is French Mahogany with glass sides and top, sliding door both back and front; the finish is of highly polished brass, lacquered. No. 20580 with Agate Bearings
each $25.00 No. 20582 with Steel Bearings
each $22.50 These balances are being sold at a most unusually low price and bear our guarantee. The supply is limited and if you have use for at least one of them, we urge you to place your order at once.
Repeated object lessons have demonstrated that nearly all progress in science has resulted in important advances in industry
G-E Research Laboratory
Schenectady, N. Y.
Among the many products developed by the General
For further information address Supply Department, Schenectady Office.
Sales Offices in all large cities
Complete Hospital Laboratory Centrifuge Outfit, for urine, bacteriological, serological and milk testing, consisting of International new self-balancing Size I Centrifuge, with step by step rheostat for speed control, and the following equipment: 1 24309 Head, 8-place 50 ml
12 24036 Glass Tubes, 15 ml. graduated 8 24314 Trunnion Rings
50 ml, plain 8 24315 Metal Tubes, 50 ml
50 ml, graduated 8 24318 Reducing Caps
50 ml, narrow neck 8 24319 Babcock Milk Test Trunnion Cups 12 33964 Milk Bottles, 8%, 18 grams 12 24028 Glass Tubes, 15 ml, plain
4 33968 Cream Bottles, 50%, 9 grams 24275. Complete Outfit, as described above; for 110 volt d. C..
237.00 24277 ditto, but for 110 volt, 60 cycle, a. C...
237.00 24278. ditto, 220
237.00 24279. ditto, 220 volt, 60 cycle, a. c..
Prices subject to change without notice
ARTHUR H. THOMAS COMPANY
WHOLESALE, RETAIL AND EXPORT MERCHANTS LABORATORY APPARATUS AND REAGENTS WEST WASHINGTON SQUARE
PHILADELPHIA, U. S. A.
FRIDAY, APRIL 29, 1921
REORGANIZATION OF THE WORK OF
THE FEDERAL GOVERNMENT1 CONTENTS
THERE is one problem of the new adminis
tration that has received the attention and Reorganization of the Work of the Federal Government: HERBERT HOOVER
397, thought of the organized engineers of Amer
ica for many years past. This is the problem The American Engineering Council: PRO
of the reorganization of the federal governFESSOR DEXTER S. KIMBALL
ment. The inadequacy, the wastefulness, and Plagiarisms: DR. JONATHAN WRIGHT
the inefficiency of our federal organization
was evident enough under pre-war conditions. Conservation Conference on Resources of Interior Waters
These inadequacies, these inefficiencies, these
wastes were exhibited to the country during Scientific Events:
the war at the cost of millions. The American Engineering Council; The Classification and Salaries of Government
Congress has placed the problem in the Employees; The Museums and Collections hands of a very able congressional joint comof Yale University; The Heckscher Fund mittee. But if this joint committee succeeds Grants of Cornell University
in securing the imminently necessary results Scientific Notes and News
it will only be by full insistent support to it
by public opinion. Many attempts have been University and Educational News
made at reorganization before but all of them Discussion and Correspondence :
have gone to the same crematory, the interOn the Use of the Terms “Denudation,' minable differences in opinion among the “ Erosion, Corrosion” and “Corrasion'':
executive and legislative officials over details. DR. MALCOLM H. BISSELL. Euclid of Alexandria and the Bust of Euclid of Megara:
To any student of federal organization, one PROFESSOR FLORIAN CAJORI. Rainbow by sweeping and fundamental necessity stands Moonlight: C. J. ELMORE
out above all others, and that is that the Quotations:
administrative units of the government must British Dyestuffs Corporation
415 be re-grouped so as to give each of the great
departments more nearly a single purpose. Scientific Books :Onslow's Plant Biochemistry: DR. CLAR
The hodge-podge of aims in certain adminisENCE AUSTIN MORROW. Hrdlička's Anthro- trative branches is scarcely believable when pometry: Dr. E. A. HOOTON
we consider our national pride and skill Special Articles :
in organization. Such functions as public Subepithelial Glycogen Cells in Embryo domain, public works, assistance to veterans, and Recently Hatched Fish: DR. FREDERICK public health functions, aids to navigation, W. ELLIS. The Ovarian Cycle of Swine : DR. GEORGE W. CORNER
to industry, to trade, purchasing of major 418
supplies, are each and every one scattered The National Academy of Sciences
over from four to eight departments, most of which are devoted to some other major
purpose. MSS. intended for publication and books, etc., intended for
1 Summary of an address by Mr. Herbert review should be sent to The Editor of Science, Garrison-on
Hoover, made at the dinner given in his honor by Hudson, N. Y.
the Engineers' Club of Philadelphia, April 16.