X 



LIST OF PUBLICATIONS. 



[Vol. 36, 1917] 



U. S. Department of Agriculture — Con. 



Scientific Contributions— Con. Page. 



The Fertilizer Value of City 

 Waste. — I, The Composition 

 of Garbage, W. J. O'Brien 

 and J. R. Lindemuth 728 



Morphology and Evolution of 

 Leaves, O. F. Cook 729 



The Effect of Vanillin and 

 Salicylic Aldehyde in Cul- 

 ture Solution, J. J. Skinner. 731 



Identity of Cohoba, the Nar- 

 cotic Snuff of Ancient Haiti, 

 W. E. Safford 734 



Change of Sex in Hemp, F. J. 

 Pritchard 736 



Carman's Wheat-rye Hybrids, 

 C. E. Leighty 739 



The Relation of Humidity to 

 the Ripening and Storage of 

 Fruits, A. D. Shamel 741 



Tropical Pomology. — A New 

 Field for Horticultmists, 

 W. Popenoe 742 



The Use of Commercial Fer- 

 tilizers, J. F. Breazeale. . . . 743 



Farm Woodlot Timber: Its 

 Uses and Principal Markets, 

 G.N.Lamb 745 



U. S. Department of Agriculture — Con. 



Scientific Contributions — Con. Page. 



The Greenheart of Commerce, 



C. D. Mell 745 



Phacidium infestans on West- 

 ern Conifers, J. R. Weir 752 



Pinus ponderosa and P. jeffreyi, 

 Hosts for Razoumofskya 

 americana, J. R. Weir 753 



Nematode Parasites of Mam- 

 mals of Rodentia, Lagomor- 

 pha, and Hyracoidea, M. C. 

 Hall 753 



White Flies of the Subfamily 

 Aleyrodinse (Aleyrodidse), 

 A. L. Quaintance and A. C. 

 Baker 755 



A Study of 108 Milking Ma- 

 chines in Jefferson County, 

 N. Y., F. E. Robertson and 

 C.W.Gilbert 774 



Report of the Committee on 

 Dairy and Milk Inspectors, 

 E. Kelley 774 



Convenient Form of Hook 

 Gage, R. B. Sleight Tests of 

 Large Reinforced Concrete 

 Slabs, A. T. Goldbeck and 

 E.B.Smith 783 



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