322 Scientific Intelligence. 



living cottontail rabbit, the existing Canadian beaver, and the 

 giant beaver, Cast oroides, with a length of 8 or 9 feet and eight 

 times the bulk of its living relative. Carnivora are represented 

 by the brown bear, common skunk, prairie wolf, and the extinct 

 Canis mississippie?isis } allied to the timber wolf of to-day. 



It is to be regretted that in his extended analysis Doctor Hay 

 did not give revised lists of each of the successive faunas. The 

 few which are given, like the Aftonian fauna, seem to include 

 questionable forms. 



The figures are well drawn, and there is an abundance of well- 

 chosen photographs reproduced in the plates. The latter are for 

 the most part, however, very poor half-tone prints, which lack 

 clarity of detail and mar the appearance of the work. 



Doctor Hay's work is highly important, and it is hoped that so 

 well-equipped an authority may be able to extend his studies to 

 include the Quaternary of the entire continent. r. s. l. 



7. Notes on Agelacrinidce and Lepadocystinoe, with descrip- 

 tions of Thresherodiscus and Brockocystis ; by Aug. F. Foerste. 

 Bull. Sci. Lab. Denison Univ., vol. 17, pp. 399-487, pis. 1-6, 8 

 text figs., 1914. — The author here describes the detail of the 

 forms cited in the title, along with some new species and the new 

 genera Thresherodiscus and Brockocystis. c. s. 



8. An Introduction to the Study of Fossils (Plants and Ani- 

 mals) ; by Hervey Woodburn Shimer. New York 1914 (The 

 Macmillan Company). — Professor Shimer presents in this new 

 book an introduction to the various types of organisms found 

 fossil, treated by way of their living representatives. The first 

 82 pages are devoted to plants, followed by 238 pages treating 

 of invertebrates, and 82 pages describing vertebrates. The sub- 

 ject matter is handled in a broad and general way, as for instance 

 among the brachiopods (25 pages), where 12 pages are devoted to 

 general characteristics and the remainder to 11 genera representa- 

 tive of this class of organisms, illustrated by 43 figures. To 

 fasten the information in the student's mind and to facilitate 

 laboratory work, 57 questions are asked in 12 different places. 



This is a good elementary book with which to begin the study 

 of paleontology, and if the subject is pursued along with the 

 laboratory studies as designed by the author, the illustrations are 

 sufficient. The best part of the book is that relating to the inver- 

 tebrates ; while the other two divisions are adequate for general 

 information, they are yet not detailed enough for students intend- 

 ing to pursue paleobotany or vertebrate paleontology. c. s. 



9. Notes on the Paleontology of Preston County : Fossil fauna 

 of the Conemaugh rocks ; by W. Armstrong Price. West Vir- 

 ginia Geol. Surv., Preston County Rept., pp. 472-553, pis. 42, 

 43, 1914. — The author describes the entire fauna known from the 

 Conemaugh division of the Pennsylvanian of Preston County, 

 West Virginia. There are 71 named forms (3 new), all inverte- 

 brates, and carefully identified with authentic material. Of these 

 15 are brachiopods, 31 bivalves, and 17 gastropods. c. s. 



