158 ScieiitifiG Intelligence. • 



6. Geological Survey of Alabama. Eugene A. Smith, State 

 Geologist. — The following bulletins have been issued: 



No. 17. Second report on the Water Powers of Alabama; by 

 Benjamin M. Hall and Maxcy R. Hall, Consulting Engineers. 

 Pp. 448; with map, plates and text figures. 



No. 18. Preliminary Report on the Crystalline and other 

 Marbles of Alabama; by William F. Prouty. Pp. 212; 40 

 pis., 20 figs. 



No. 19. Statistics of the Mineral Production for 1915, com- 

 piled from the Mineral Resources of the United States by Eugene 

 A. Smith. Pp. 87. 



7. Bihliogy^aphy of the Geology and Mining hiterests of 

 the Black Hills Region ; by Cleophas C. O'Haeka. Bulletin 

 No. 11, South Dakota School of Mines ; Department of Geology. 

 Pp. 216, with map. Rapid City, South Dakota, May, 1917. — 

 The obvious value of this bibliography is increased by the fact 

 that in most cases brief digests are given of the papers noted. 

 There is also a map of the Black Hills Region. 



8. Story of the Grand Canyon of Arizona : a popular illus- 

 trated account of its Rocks and Origin; by N. H. Dakton. Pp. 

 81. Kansas City, Mo. (published by Fred Harvey). — An inter- 

 esting account of the Grand Canyon, made instructive by the 

 clear exposition and sections of the writer; it is very attractive 

 in the large number of well-chosen illustrations. 



9. Bulletin of the University of Texas., 1916, JSFo. 66. J. A. 

 Udden, Director of the Bureau of Economic Geology and 

 Technologj^ Pp. v, 93; 7 pis. (including map), 7 figs. Austin, 

 Texas. — This bulletin is devoted to the Thrall Oil Field and in- 

 cludes a chapter on this general subject by J. A. Udden and H. 

 P. Bybee; another on the ozocerite by E. P. Schoch; and a third 

 on the chemical composition of the Thrall petroleums by E. P. 

 Schoch and W. T. Read. 



11. Miscellaneous Scientific Intelligence. 



1. Food Poisoning ; by Edwin Cakes Jordan. Pp. 115. 

 Chicago, 1917 (The University of Chicago Press). — This is a 

 very readable summary of the evidence and probabilities relating 

 to the responsibility of certain articles of food for those physio- 

 logical disturbances which are frequently designated as " ptomain 

 poisoning." It also deals with sensitization to protein foods, 

 poisonous plants and animals, mineral or organic poisons added to 

 food, food-borne pathogenic bacteria, animal parasites, poisonous 

 products formed in food hj bacteria and other micro-organisms, 

 and poisons of obscure or unknown nature, including the so-called 

 deficiency diseases. The judgment of the author appears to be 

 sane and well balanced on many topics which are still within the 

 range of debate. The little volume is not too technical to pre- 



