514 CATALOGUE OF EXHIBITS. 



b. Patriofelis, from the Middle Eocene Badlands of the 

 Bridger Basin. 



2. New or Little Known Fossil Mammals from the Oligocene 



and Miocene Badlands of Colorado. Collected by 

 American Museum Expedition of 1898, W. D. Matthew 

 in charge. Skeletons, parts of skeletons and skulls of 

 primitive ruminants, camels, horses, sabre -tooth tigers, 

 civet-foxes, et cetera. 



3. Fossil Mammals from the Miocene and Pleistocene Bad- 



lands of Texas. Collected by American Museum Ex- 

 pedition of 1899, J. W. Gidley in charge. 



a. Primitive Mastodon, skull and hind-limb bones. From 

 Upper Miocene strata. 



b. Mammoth {Elephas primigetiius), jaw, fore-limb bones,^ 

 vertebrje and ribs. From Pleistocene strata. 



c. Fossil Horse {Eqiius Occident alls), complete skeleton and 

 four skulls. From Pleistocene strata. 



4. Restorations of Fossil Vertebrates by Charles Knight. 



From skeletons in American Museum of Natural 



History. 

 No. 25. Great Marine Lizard or Mosasaiir {Tylosanriis), of the 



Cretaceous Period. From the complete skeleton which 



is nearly thirty feet long. 

 No. 26. The Irish Elk (^Megaceros'liiberniciis) of the Pleistocene 



Period. 

 II. Series of Photographs, 25 in Number Illustrating the 



Occurrence of the Mastodon Recently Discovered at 



Kewburg, N. Y. Exhibited by W. G. Levison. 



K 



PHYSICS AND PHOTOGRAPHY. 



In Charge of William Hallock. 

 I. Apparatus and Records for Determination of Stresses in 

 Railway Rails. Exhibited by P. H. Dudley. 



