202 



THE AMERICAN NATURALIST [Vol. XLl 



Magnus has separately issued from vol. 21 of the Naturwissen- 

 ^chafiliche Rundschau an account of the destructive mushroom para- 

 site, Mycogone perniciosa. 



An exhaustive account of a Sclerotinia-rot of apples is given by 

 Molz in the Centralblatt Jilr Bakteriologic, etc., Abteilung 2, of October 

 27. 



A study of the influence of selected yeasts upon fermentation, with 

 reference to cider making, by Moncure, Davidson and Ellett, forms 

 Bulletin 160 of the Virginia Agricultural Experiment Station. 



The Ustilaginales of North America are revised by Clinton in the 

 recently issued vol. 7, part 1, of "North American Flora," under the 

 editorship of Professors Underwood and Britton. 



A descriptive account of the economic plants of the world and of 

 their commercial uses, by Freeman and Chandler, is being issued in 

 fortnightly parts by Pitman and Sons, of London, under the title 

 "The World's Commercial Products." 



Brief descriptions, with 3-color illustrations, of the most noxious 

 weeds or "proclaimed plants" of Victoria are being published by 

 Ewart and Tovey in The Journal of the Depaiimrui of Agrlnilture of 

 Victoria. 



An illustrated account of the seed of red clover, and its impurities, 

 by Brown and Hillman, forms Farmers' BuUdin no. JOO, llic U. S. 

 Department of Agriculture. 



Laubert gives an account of Ambrosia arfemtxiafolid as a (Jcrman 

 weed in vol. 35, no. 5, of Landwirtschaftlichc Jahrbiichcr. 



Stockberger gives an economic account of Spigelia marilandica and 

 its surrogates in Bulletin 100, part 5, of the Bureau of Plant Industry, 

 U. S. Department of Agriculture. 



A portrait of I>ord Avebury forms the frontispiece to Nature Notes 

 for October. 



being published by Paris in current numbers ..!' tlu- l!rn,r ] ln>i imk 

 de VAlgerie. 



"Date varieties and date culture in Tunis" is the title of Uulhiin 

 no. 92 of the Bureau of Plant Industry, IJ. S. Department of Agri- 

 culture, by Kearney. 



