INDEX TO VOLUME I. 333 



PAGES 



Professor Todd, cited 17, 18, 25, 29, 31, 35, 36 



Torsal lines 300 



Trachydomia wheeleri 166 



Transversals 306 



Triple Point on Monoid 310, 311 



Twisted Curves 305 



Types of Collineations which leave Invariant a Quadric Surface 282 



Types of projective transformations in one dimension 120 



Vertebrates, On Certain Homoplastic Characters in Aquatic Air-breathing, 259 

 Vertex of monoid 305, 307 



Willard shales 176 



Williston, S. W., Notes on Some New or Little known Extinct Reptiles 247 



Williston, S. W., On Certain Homoplastic Characters in Aquatic Air-breath- 

 ing Vertebrates 259 



Williston, S. W., Restoration of Dolichorhynchops osborni, a New Creta- 

 ceous Plesiosaur 141 



Wood, Reference to Dr. Ruth G 281, 300 



Worm 167 



Xanthina plumicauda, n. sp 92 



Yoldia subscitula (Meek and Hayden.) 173 



