Aveust 6, 1897. ] 
8. Further Study on the Influence of Heat- 
Treatment and Carbon upon the Solubility of 
Phosphorus in Steel. By EH. D. Campbell and 
S. C. Babcock. 
9. The Action of Certain Bodies on the Diges- 
tive Ferments. By Frank D. Simons. 
10. The Decomposition of Heptane and 
Octane at High Temperatures. By A. W. Bur- 
well. 
11. Calculation of Calorimetric Values from 
Analytical Data. By H. W. Wiley. 
12. The Chemical Composition of Cement 
Plaster. By E. H.S. Bailey. 
18. Bacterial Products of Hog Cholera and 
Swine Plague. By H. A. de Schweinitz. 
14. Detection of Foreign Fats in Butter and 
Lard. By C. B. Cochran. 
15. Distillation in General. By Leon Labonde. 
16. Apparatus for Photometric Determina- 
tion of Lime and Sulphuric Acid. By J. I. D. 
Hinds. 
17. The Composition of Humus. 
Snyder. 
18. An Electrical Laboratory Stove. 
D. Sohon. 
By Harry 
By M. 
P. C. FREER, 
Secretary of the Section. 
UNIVERSITY OF MICHIGAN. 
SECTION D.—MECHANICAL SCIENCE AND 
ENGINEERING, 
Address of the Vice-President: The Ground- 
work of Dynamics. By Professor John Gal- 
braith, School of Practical Science, Toronto. 
1. Development of Engineering Industries 
by Scientific Research. By Professor W. §. 
Aldrich, W. Va. University, Morgantown, W. 
Va: ; 
2. The Cement Laboratory as a Field for In- 
vestigation. By Professor F. P. Spalding, Cor- 
nell University, Ithaca, N. Y. 
8. The Effect of Spark Losses on the Effi- 
ciency of Locomotives. By Professor W. F. 
M. Goss, Purdue University, Lafayette, Ind. 
4, A New Apparatus for Testing Indicator 
Springs. By Professor M. E. Cooley, Univer- 
sity of Michigan, Ann Arbor, Mich. 
5. Flue Gas Analysis in Boiler Tests. By 
Professor D. S. Jacobus, Stevens Institute, Ho- 
boken, N. J. 
SCIENCE. 
221 
6. Effect of Temperature on the Strength of 
Steel. By Professor R. ©. Carpenter, Cornell 
University, Ithaca, N. Y. 
7. The Properties of Aluminum Alloys. 
Professor R. C. Carpenter, Ithaca, N. Y. 
8. Analysis of Composite, Concrete and Iron 
Beams. By Professor J. B. Johnson, Wash- 
ington University, St. Louis, Mo. 
9. Definition of Elastic Limit for Practical 
Purposes. By Professor J. B. Johnson, St. 
Louis, Mo. 
10. Theories of some Planimeters without 
the aid of Calculus. By Professor Forest R. 
Jones, University of Wisconsin, Madison, Wis. 
11. The Production of X-Rays by Means of 
the Planté Accumulator, in which voltage is 
chiefly concerned, the effect of current being 
largely eliminated (Illustrated by Stereop- 
ticon.) By Professor W. A. Rogers, Colby 
University, Waterville, Me. 
12. A Universal Alternator for Laboratory 
Purposes. By Professor Henry 8. Carhart, 
University of Michigan, Ann Arbor, Mich. 
13. Calculation of the Energy Loss in Arma- 
ture Cores. By Professor W. HE. Goldsborough, 
Purdue University, Lafayette, Ind. 
14. A New Formula for Determining the 
Width of Leather Belting. By Professor John 
J. Flather, Purdue University, lafayette, 
Ind. 
15. A Graphical Solution of Belting Prob- 
lems. By Professor John J. Flather, Lafayette, 
Ind. 
16. On Engineering Conditions connected 
with the Mounting of Instruments used on 
Eclipse Expeditions. By Professor David P. 
Todd, Amherst College, Amherst, Mass. 
JoHN J. FLATHER 
Secretary of the Section. 
PURDUE UNIVERSITY. 
By 
SECTION E.—GEOLOGY AND GEOGRAPHY. 
Address of the Vice President: The Pittsburg 
Coal Bed. By Professor I. C. White, University 
of West Virginia, Morgantown, West Va. 
1. Stylolites. By Professor T, C. Hopkins, 
State College, Centre Co., Pa. 
2. A Suggestion in Regard to the Theory of 
Volcanoes. By Professor William North Rice, 
Wesleyan Uniy., Middletown, Ct. 
