16 
IOWA ACADEMY OE SCIENCES. 
volcanic necks of Piatiagorsk; and names of coals west of the Mississippi.— 
Chas. R. Keyes. 
13. Diphenyl Ethers. — Alfred N. Cook. (Introduced by S. W. Beyer.) 
14. Some recent analyses of Iowa building stone; also of Iowa potable 
waters. — Nicholas Knight. 
15. A study of Reversible Re-actions. — W. N. Stull. (Introduced by W. 
S. Hendrixson.) 
16. A study of contaminated water supply; the influence of chlorine as 
chlorides in the determination of oxygen consumption in water analysis.— 
J. B. Weems and J. C. Brown. 
17. A study of some cotton seed oils. — J. B. Weems and H. N. Gretten- 
berg. 
18. An expedient for maintaining constant temperature through the 
process of salt glazing clay wares. — I. A. Williams. 
19. Preliminary report on the flowering plants of Adair county. — James 
E. Gow. 
20. Pure Food legislation, discussion opened by C. O. Bates. 
21. A comparison of media for counting bacteria in milk; a method for 
isolating and counting gas producing bacteria in milk.— C. H. Eckles. 
22. A drift exposure in Tama county.— T. E. Savage. 
23. The loess and modern molluscan faunas of Iowa City and vicinity; 
the loess and associated deposiis on the state farm at Lincoln, Nebraska; 
a supplementary list of Lyon county plants, — B. Shimek. 
24. A National StandardizingBnreau, discussion opened by A. A. Veblen. 
25. A review of the Tettigonidse of North America north of Mexico.— 
E. D. Ball. 
