RECENT PUBLICATIONS 



BOTANY AND ZOOLOGY 



The Birds of North and Middle America. By R. Ridgway. Part 

 VIII, Bulletin 50 of the United States National Museum. Washing- 

 ton, D. C. 1919. Pp. 853. 



Plant Succession in Relation to Range Management. By A. W. 

 Sampson. Bulletin 791, U. S. Department of Agriculture. Contribu- 

 tion from the Forest Service. Washington, D. C. 1919. Pp. 76. 



Studies of Tropical American Phanerogams — No. j. By P. C. 

 Standley. Vol. 20, Pt. 6, Contributions from the U. S. National 

 Herbarium. Washington, D. C. 1919. Pp. 173-220. 



A Critical Revision of the Genus Eucalyptus. By J. H. Maiden. 

 Vol. IV, Pt. 7 (Pt. XXXVII of the Complete Work). Sydney, 

 N. S. W. 1919. Pp. 181-200; pis. 152-55. 



The Ray System of Quercus Alba. By L. M. Langdon. Botanical 

 Gazette, Vol. 65, No. 4, 1918, pp. 313-23. 



Limiting factors in Relation to Specific Ranges of Tolerance of 

 Forest Trees. By A. H. Hutchinson. Botanical Gazette, Vol. 66, 

 No. 6, 1918, pp. 465-93. 



Lithological Factors Limiting the Ranges of Pinus Banksiana and 

 Thuja Occidentalis. By M. L. Fernald. Contribution from the Gray 

 Herbarium, New Series No. Iviii. Reprinted from Rhodora. Vol. 21, 

 No. 243, March, 1919. Pp. 41-67. 



SILVICULTURE, PROTECTION, AND EXTENSION 



Protection from the Locust Borer. By F. C. Craighead. Bulletin 

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

 of Entomology. Washington, D. C. 1919. Pp.12. 



Range Management on the National Forests. By J. T. Jardine and 

 M. Anderson. Bulletin 790, U. S. Department of Agriculture. Con- 

 tribution from the Forest Service. Washington, D. C. 1919. Pp. 98. 



Basket Willozv Culture in Maryland. By K. E. Pfeiffer. Maryland 

 State Board of Forestry. Baltimore, Md. 1919. Pp. 24. 



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