RECENT PUBLICATIONS 



BOTANY AND ZOOLOGY 



The Genus Calosonia, including Studies on Seasonal Histories, 

 Habits, and Economic Importance of American Species North of Mex- 

 ico and of Several Introduced Species. Bull. 417, U. S. Department of 

 Agriculture. Contribution from the Bureau of Entolomology. Wash- 

 ington, D. C. 19 1 7. Pp. 124. 



Stock-poisoning Plants of the Range. By C. D. Marsh. Bull. 575, 

 U. S. Department of Agriculture. Contribution from the Bureau of 

 Animal Industry. Washington, D. C. 1918. Pp. 24. 



Miscellaneous Conifers of the Rocky Mountain Region. By G. B. 

 Sudworth. Bull. 680, U. S. Department of Agriculture. Contribution 

 from the Forest Service. Washington, D. C. 1918. Pp. 45. 



Canadian Bark Beetles: Part II, A Preliminary Classification, with 

 an Account of the Habits and Means of Control. By J. M. Swaine. 

 Bull. 14, Entomological Branch, Department of Agriculture. Ottawa, 

 Canada. 1918. Pp. 143. 



Revision of the Genus Eucalyptus. By J. H. Maiden. Vol. IV, Pt. 5 

 (Pt. XXXV of the Complete Work). Published by the Government 

 of New South Wales. Sydney, N. S. W. 1918. Pp. 111-135; pis. 

 144-147. 



Diagnosing JJliite-pine Blister Rust from its Mycelium. By R. H. 

 Colley. Journal of x'Vgricultural Research, 11 (1917), No. 6. pp. 281- 

 286. 



Distinguishing Characters of Xorth American Sycamore Woods. By 

 W. D. Brush. Botanical Gazette, 64 (1917), No. 6, pp. 480-496. 



Plant Succession on Abandoned Roads in Eastern Colorado. By 

 H. L. Shantz. Journal of Ecology, 5 (1917), No. i, pp. ig-42. 



Ray Tracheids in Quercus alba. By S. J. Record. Botanical Gazette, 

 64 (1917), No. 5, p. 437. 



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