2l6 



THE AMERICAN NATURALIST. [Vol. XXXVII. 



Protozoa and also contain data of general interest, the latter for 

 example would have provided some connecting links between the 

 Mastigophora and Ciliat for the discussion of the inter-relationships 

 of these groups. This book should help materially in stimulating 

 and fostering the study of this most interesting group by American 

 students by whom it has been much neglected during the past decade. 



BOTANY. 



Notes.— The Proceedings of the Pittsburgh meeting of the Society 

 for the Promotion of Agricultural Science include the following botani- 

 cal papers: — Bsssey, Notes on the poisonous plants of Nebraska ; 

 Voorhees and Lipmans, Individuality of plants an important factor 



restore vigor to the fungus; Lyon. The importance of considering 

 previous environment in conducting variety tests ; Bolley, Preliminary 

 efforts to develop a continuous process of seed disinfection by means 

 of formaldehyde vapor; Bolley, Use of the centrifuge in diagnosing 

 plant diseases; Beal, Observations by the roadside; Pane, Plant 

 depredations and plant culture ; Weems and Hess, Study of the food 

 value of some of the edible fungi of Ames [In. j ; Chester, Bacterio- 

 logical analysis of soils; and Lazenbv. Some notes on the water con- 

 tent of certain plants. 



The Botanical Gazette for December contains the following articles : 

 — Frye, A morphological study of certain Asclepiadacea: ; Leavitt, 

 The root-hairs, cap, and sheath of Azolla; Stevens, Studies in the 

 fertilization of Phycomycetes ; Berry, Notes on Sassafras; Fairchild, 

 A date-leaf boat of Arabia ; and Cockerell, A variable larkspur. 



The Bulletin of the Torrey Botanical Club, for December, contains 

 the following articles: — Cannon, A cytological basis for the Mende- 

 lian laws; Vail, Notts on the genus Rouliniella : I'nderwood, Review 



IX; Rusby, Enumeration of the plants collected by^Dr. H. H. Rusby 

 in South America, 1885-6, XXXII ; and Knowlton, Report on a 

 small collection of fossil plants from the vicinity of Porcupine Butte, 

 Montana. 



