August 4, 1899.] 
Laboratory Manual Experiments to illustrate the Ele- 
mentary Principles of Chemistry. W. W. HILLYER. 
New York and London, The Macmillan Company. 
1899. Pp. 198. 
A Short History of: the Progress of Scientific Chemistry 
in Our Own Times. WILLIAM A. TILDEN. Long- 
mans, Green & Co. 1899. Pp. x + 276. 
SCIENTIFIC JOURNALS AND ARTICLES. 
American Chemical Journal, July, 1899: ‘Cam- 
phoric Acid,’ by W. A. Noyes ; ‘Contributions 
to our Knowledge of Aqueous Solutions of 
Double Salts,’ by H. C. Jones and K. Ota. 
This isa continuation of the investigation of the 
double sulphates. The evidence, in the case of 
the double chlorides, seems even stronger in 
favor of the hypothesis which has been so 
strongly emphasized by Remsen, that double 
salts are true compounds,as this work shows that 
molecules of double salts exist'as such in concen- 
trated solution. ‘On Undecylamine and Penta- 
decylamine and the Preparation of the Higher 
Amines of the Aliphatic Series,’ by Elizabeth 
Jeffreys; ‘An Electric Drying Oven,’ by T. W. 
Richards. The general devices that can be 
used to secure the desired results in a drying 
oven are shown when the source of heat is due 
to electrical resistance. ‘On Certain Deriva- 
tions of Symmetrical Trichlorbenzol,’ by C. L. 
Jackson and F. H. Gazzolo; ‘Narcotine and 
Narceine,’ by G. B. Frankforter and F. H. 
Keller; ‘The Reaction between Aliphatic Sul- 
phocyanates and Metallic Derivatives of Aceto- 
aceticester and Analogous Substances,’ by E. P. 
Kohler; ‘A Method for Carrying out Chemical 
Reactions under High Pressures,’ by B. H. 
Hite. The author gives full details for the ap- 
paratus necessary for such work. 
J. ELLIOTT GILPIN. 
THE Mois Scientifique et Industrielle is the title 
of anew monthly journal which has begun pub- 
lication in Paris. Each number contains an 
original article and a digest of physical and 
chemical literature. The subjects covered are 
physics, including electricity and applications ; 
chemistry and the chemical industries, includ- 
ing metallurgy, dyeing, distilling, sugar mak- 
ing, etc.; the mineral industries; mechanics 
and the mechanical industries, and agriculture. 
SCIENCE. 
151 
SOCIETIES AND ACADEMIES. 
AMERICAN ASSOCIATION FOR THE ADVANCE- 
MENT OF SCIENCE. 
THE following titles of papers submitted for 
the Columbus meeting have been received by 
the secretaries of the respective sections. Ad- 
ditions will doubtless be made to the programs 
at the time of the meetings. 
SECTION B—PHYSICS. 
On a new spectrophotometer and spectro- 
scope ; On achromatic polarization in combina- 
tions of crystalline media: D. B. Brace, Univer- 
sity of Nebraska, Lincoln, Nebr. 
An apparatus for the demonstration of the 
varying currents in the different conductors of 
a rotary converter: F. C. Caldwell, Ohio State 
University, Columbus, O. 
On optical calibration of the slit of a spec- 
trophotometer; Absorption spectra of solutions : 
E. VY. Capps, University of Nebraska, Lincoln, 
Nebr. 
An absolute determination of the E. M. F. 
of the Clark cell: Henry 8. Carhart and Karl 
E. Guthe, University of Michigan, Ann Arbor, 
Mich. 
The time of perception as a measure of the 
intensity of light; Relation between space and 
time in vision: J. McK. Cattell, Columbia Uni- 
versity, N. Y. 
On the fluting in Kundt’s tubes with gases 
at different pressure; On the escape of gases. 
from planets according to the kinetic theory : 
S. R. Cook, University of Nebraska, Lincoln, 
Nebr. 
Note on hysteresis curves determined by a 
yoke with broken magnetic circuit ; On the de- 
magnetizing effect of currents. in iron when 
electro-magnetically compensated : Z. E. Crook, 
University of Nebraska, Lincoln, Nebr. 
A new graphical method of constructing the 
entropy-temperature diagram from the indicator 
card of a gas or oil engine: H. T. Eddy, Uni- 
versity.of Minnesota, Minneapolis, Minn. 
Some types of March weather in the United 
States: Oliver L. Fassig, Johns Hopkins Uni- 
versity, Baltimore, Md. 
Magnetic measuring instruments and the 
laws of magnetism; some new electric appa- 
ratus; wave forms in the aluminum condenser 
