402 CARNEGIE INSTITUTION OF WASHINGTON. 



script of Apicius hitherto unused. The collation made of this manu- 

 script will be used in the forthcoming Teubner edition of Apicius, and a 

 short description of the manuscript has appeared in the "BerHner Philo- 

 logische Wochenschrift. " An article on the unique manuscript of 

 Apuleius's "Metamorphoses" appeared in "Classical Quarterly." The 

 delayed edition of the "Bobbio Missal" with palseographical notes was 

 published duiing the year. The Pliny Study has been amended and a 

 translation has been added. It is hoped that it will see the hght in 

 the coming year. 



PALEONTOLOGY. 



Case, E. C, University of Michigan, Ann Arbor, Michigan. Study of the 

 vertebrate fauna and paloeogeography of North America in the Permian 

 period, with especial reference to world relations. (For previous reports see 

 Year Books Nos. 2, 4, 8-18.) 



Work has continued through the year in gathering and compiling 

 material in preparation of a report upon the stratigraphy and palseo- 

 geography of the Permo-carboniferous and Permian of the world in rela- 

 tion to the deposits of the same age in North America. 



A trip was made into the Triassic beds of western Texas in the hope 

 of establishing some relationship betv/een the Permo-carboniferous and 

 Triassic. The beds were found to be upper Triassic, and a considerable 

 collection was made from a new locality. This collection is not yet 

 worked up, but includes several new forms, notably a new suborder of 

 phytosauroid reptiles. A preliminary description has been published 

 in the Journal of Geology (vol. 23, No. 6, 1920). 



Hay, Oliver P., U. S. National Museum, Washington, District of Columbia. 

 Associate in Palaeontology. (For previous reports see Year Books Nos. 

 11-18.) 



The greater part of the time since September 1919 has been devoted 

 to the study of the Pleistocene deposits and of the Pleistocene verte- 

 brates of the States west of the Great Lakes: Wisconsin, Minnesota, 

 North Dakota, South Dakota, Montana, Wyoming, Idaho, Washing- 

 ton, and Oregon. Those parts of these States which lie north of the 

 Missoui i River are covered mostly by glacial drift of Wisconsin age. In 

 these glaciated regions few vertebrate fossils have yet been discovered, 

 and most of these belong to post-Wisconsin times. They are mostly 

 elephants, mastodons, and musk oxen. The subject becomes more 

 interesting in Idaho, Oregon, and Washington. A considerable number 

 of collections liave at different times been made ui these States and 

 many species have been discovered. Usually, too, these species are 

 those which lived during the early Pleistocene. 



Along Snake River, stretching in a great curve from near Yellowstone 

 National Park into Oregon, are the Snake River Plains. A description 

 of these, with a map, was presented by Dr. I. C. Russell in 1902 (BuU. 



