(ONTFATS OF \()LT AlF X. 



No. 1. — Note on a Problem in the Theory of Algebraic Manifolds. By 



/S. Lefschelz Page '^ 



2. — An Investigation of the Conrlition of the Drinking Water on 

 Trains Operating In or Through Kansas. By A^. P. Sher- 

 wood Page IM 



3. — A Study of the Relative Efficiency of the Various DiiTer.^ntial 

 Staining Methods Used in Identifying the Tubercle Bacillus. 

 By N. P. Sherwood Page 25 



4. — On a Collection of Fossil Vertebrates Made by Dr. ¥. W. Cra- 



gin in the Equus Beds of Kansas. By Olwer P. Hay Page 39 



5. — Ogmodirus martinii, a New Plesiosaur from the Cretaceous of 



Kansas. By S. W. WilUsfon, Roy L. Moodie Page 61 



6. — An Anatomical Study of Cycloloma atripHcifolium. By Dud- 

 ley J. Pratt Page 87 



7. — Larval Trematodes from Kansas Fresh-water Snails. By Eorl 



C. O'Roke Page 161 



8. — Histology of Astragalus mollissimus. By Neva Ritter Page 197 



9. — Ecological Morphology of Abutilon theophrasti. By Louise 



Luckan Page 219 



10. — Eryops; Eryopsoides, Gen. Nov. from the New Mexico Per- 

 mian. By Herman Douthitl Page 237 



11. — A Study of Several Strains of Pleomorphic Streptococci. By 



N. P. Sherwood Page 245 



12. — The Function of the Supraglenoid Canal. By Herman Douthitl 



Page 261 



13. — The Chromosomes of Nomotettix. By Myrtle Frances Ray- 

 burn Page 267 



14. — Chromosome Studies IV: A Deficient Supernumerary Acces- 

 sory Chromosome in a Male of Tettigidea parvipennis. By 

 W. Rees Brebner Robertson Page 275 



15. — A Mule and a Horse as Twins, and the Inheritance of Twin- 

 ning. By W. Rees Brebner Robertson Page 293 



