THE JOURNAL 



OF 



THE DEPARTMENT OF AGRICULTURE 



OF 



PORTO RICO 



A Quarterly Journal containing scientific contributions from Vjq mem- 

 bers of the Staff of the Insular Experiment Station, Bio Piedras, P. B. 

 Four nunsers constitute a volume, issued in January, April, July, and Octo* 

 ber. Offered in exchange for bulletins ai.:\ other publications of the experi- 

 ment stations and Federal .Government, and for agricultural, horticultural, 

 botanical, and entomological journals, reports, or other similar publications. 

 Sent free to residents of Forto Bico upo^ request. 



SAN JUAN, P. R. 

 Bdbbav of Suppi.iss, Pbintinq, and Transpoktation 



1918 



JOHN A. STEVENSON, EDITOR, ■ 



(Chief, Division of Botany and 1'lant Pathology.) ^ 



'if 

 {Insular Experiment Statioji, - - Bio Piedras, Porto Rico.) i 



