158 R. ISTITUTO SPERIMENTALE COLTIVAZIONE TABACCHI 



Brooklyn Botanic Garden Record. Voi. XI, Aprii, 1922, N. 2. 

 Eleventh Animai Report, 1921. 



University of California Publications. - College of Agr culture. Agricultu- 

 ral Experiment Statio.v, Berkeley, California. 

 Bulletin 331 - 332 - 334 - 335. 



» 336 (By Ralph E. Smith. — The preparation of Mcotine 



Dust as an Insecticide). 

 » 337 - 338. 



Nyt Magazin for Naturvidenskaberne Grundlagt av den Physiographiste Fo- 

 rening i Christiania. 

 Bind 59, 1921. 



Annals of the Missouri Botanical Garden. 

 Voi. Vili, Number 2, Aprii, 1921. 



Notizblatt des Botanischen Gartens und Museumszu. 

 Berlin-Dahlem. 

 Nr. 73 (Bd. Vili) Ausgegeben ani I. Juli 1922. 



