822 



THE AMERICAN NATURALIST [Vol. XL 



Apogamy is recorded for Dasylirion acrotrichum by Went and 

 Blaauw in a separate from the Troceedings of February 24 of the 

 K. Akadrmic van Wefenschappcn fe Am.<iferdavi. 



TUv cotiditioiis which vi^vct the time of the annual flowering of 

 fniit tree, arc ;.iialyz<'<l h_v SancKteii in BnJkfin no. 137 of the Uni- 

 versity (.f Wisconsin AoTicukural Exi)criincnt Station. 



Britton and Viercck publish an extensive record of the insect visi- 

 tors of orchard flowers in part 4 of the Report of the Co7i7iecticut Agri- 

 cultural Experiment Slatimi for 1905. 



Mattei gives an account of pollination in Cupulifera^ (of which 



no. 1, of the Contrihuzioni alia liiologia Vegetale of the Botanical 

 Institute of Palermo. 



Graenicher contributes pollination notes to the April Bulletin of 

 the Wisconsin Natural History Society. 



Photograms of common weed seeds found with grass and clover 

 seed are given by Garman in Bulletin no. 124 of the Kentucky Agri- 

 cultural Experiment Station. 



An illustrated paper on common weeds and their eradication, by 

 Wilson, forms Bulletin no. /a; of the University of Mnmesota Agri- 



nd gutta-percha, with especial 

 •ectively Bulletins no. 2 and ,i 



of medicinal plants are 

 f the Proceedings of the 



A iminbcr of northwestern plants are figured, ii 

 nection, by Svhmx in Bulletin no. 73 of the Washington Agricultural 

 Experiment Station. 



An fittractiv(> little tree book, with half-tone illustrations, by Cor- 

 revon, ha.-, bcm issued hy the Atar Company, of Geneva. 



Ilar^hlMTuvr pubH-hcs (,n ])hytogeographic influences in the arts 

 and in<hi>iric,s nf Ann ricaii aborigines in the April Bulletin of the 

 Geogra plural Society of Philadelphia. 



