THE PLANT WORLD. 177 



The first number of the O. S. U. HatafaUsf. the orfran of the 



Biological Club of the Ohio State L^niversity, has just appeared. It 



contains an article on Ampelopsls cordata in Ohio by Dj-. W. A. Kel- 



lerman, a list of additions to the Ohio flora and some directions for 



collecting and preserving microscopic plants. 



« 



Mr, C. D. Beadle continues his studies in Crataegus in the Xovem- 

 ber Botanical Gazette in which he describes no less than 10 new 

 s})ecies. The same number of the Gazette contains some observations 

 on the root system of certain Cactacese, by C. E. Preston, in which 

 he shows that root systems are somewhat smaller than would be 

 naturally expected. His conclusions are as follows: "In the majority 

 of the larcjer Cactaceoe there are two distinct root svstems — one hori- 

 zontal for absorption purposes; the other passing downward for an- 

 chorage". Mr. Preston also has a short note on the non-sexual pro- 

 pagation of Opuntia in which he shows that the joints intended for dis- 

 semination are obovate and have the largest spines at the distal end, 

 and when the joints fall to the ground the spines hold u}) this end 

 and press the other on the soil in the best possible position for striking 

 root. 



The Bulletin of the Torrey Botanical Chth for October contains 

 several of the papers which formed a part of the exercises of Torrey 

 Day, celebrated at the New York Botanical Garden, Jiuie 27, 1900, 

 in connection with the Botanical Section of the American Association. 

 The first, by Dr. N. L. Britton, considers Dr. Torrey as a botanist, and 

 shows the vast amount of work he was enabled to accomplish often in 

 the midst of time filed with other engrossing oflicial duties. It forms 

 as Dr. Britton well says ' 'a grand contribution to science, and among 

 the most prominent of that of all students of the North American 

 flora". This paper is accompanied by a complete bibliography of Dr. 

 Torrey's writings, showing that his first botanical paper was published 

 in 1819 and the last in 187L 



The work of the Torrey Botanical Clul) by Dr. Edward S. 

 Burgess is the subject of the second paper, in which he sketches the ac- 

 tivity of the club from its foundation in 1870 to the present day. Then 

 follows a number of short reminiscenses of Dr. Torrey b}' Dr. James 

 Hyatt, Prof. T. C. Porter and Prof. Charles H. Peck. 



