CONTEXTS OF VOLl :^1E X. 



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



■S. Lefscheiz Page 3 



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

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

 u-ood Page 18 



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

 Staining Methods Used in Identifying the Tubercle Bacillu.-. 

 By A'. P. Sherwood Page 25 



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



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



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



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



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

 ley J. Pratt Page 87 



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



C. O'Roke Page 161 



8. — Histology of Astragalus mollissimus. By Xera Ritfer 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 Douthiti Page 237 



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



N. P. Sherwood Page 215 



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



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 par\ipennis. By 

 W. Rees Brebner Robertson Page 275 



15. — A Mule and a Horse as Twins, and the Inheritance of T^^in- 



ning. By W. Ree!< Brebner Robertson Page 293 



