16 IOWA ACADEMY OF 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.- 1. 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 moUuscan 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 StandardizingBureau, discussion opened by A. A. Veblen. 



25. A review of the Tettigonidae of North America north of Mexico. — 

 E. D. Ball, 



