October 18, 1901.] 



SCIENCE. 



597 



Thus lime, at the rate of 70 bushels per 

 acre, gave an increase in yield of 65 per cent, 

 over the untreated plot. Formalin, .375 per 

 cent, solution, an increase of 113 per cent, 

 and double that strength an increase of 119.6 

 per cent. Seventy bushels of lime per acre 

 and the weaker solution of formalin com- 

 bined gave an increase of 132.5 per cent., 

 while lime at the rate of 125 bushels per 

 acre gave an increase of 120.5 per cent. 

 The lime used was purchased in the ground 

 state and was applied with a drill before 

 the hoes, chiefly on the surface. The for- 

 maldehyde solutions were applied by trick- 

 ling down with the seeds. This paper will 

 be printed in a bulletin of the Ohio Agri- 

 cultural Experiment Station. 



3. * Comparative Climate of a Meadow 

 and Hemlock Forest ' : D. T. MacDodgal. 

 (No abstract furnished.) 



4. ' The Tylostomacese of !N"orth Amer- 

 ica ' : V. S. White, presented by L. M. 

 Underwood. 



The extensive accumulation of material 

 bearing on the stalked puffballs in the Ellis 

 collection, supplemented by considerable 

 material sent in from the Southwest by 

 Professors Wooton, Cockerell and Griffiths 

 has led to a complete revision of the species 

 of this family, which is now appearing in 

 the August number of the Bulletin of the 

 Torrey Botanical Club. This is illustrated 

 by ten plates (exhibited when the paper 

 was read). A summary of the results is as 

 follows : 



The family as represented in North Amer- 

 ica consists of — 



Tylostoma — Seventeen species, of which 

 eight are new. Of these seventeen species 

 eight are found in Colorado, which is dou- 

 ble the number from any other State with 

 the single exception of Kansas, which has 

 five species. Of the eight new species four 

 are from Colorado. 



Chlamydopus — One species recently col- 

 lected in New Mexico by Professor Cocker- 



ell. The genus has hitherto been known 

 only from South America. 



Battar7'ea^Four species of which two are 

 new. All from the Southwest. 



Queletia — Oae species, possibly introduced 

 from Europe. Found once in this country. 



Dlctyocephalos — A new genus from Colo- 

 rado, collected by Professor Bethel, of Den- 

 ver ; monotypic. 



Much still remains to be known of the 

 early stages of these plants ; in fact very 

 little is known of them. Much also remains 

 to be known of their geographic and sea- 

 sonal distribution. Two-thirds of the family 

 belong to the region of the Great Plains 

 southwestward to Texas, Sonora and south- 

 ern California. 



5. ' Lantern Views of the Botanical Gar- 

 den of the Agricultural College of Mich- 

 igan ' : W. J. Beal. 



The author exhibited views showing the 

 arrangement of the garden and gave many 

 practical hints concerning the management 

 of botanical gardens. 



6. ' Plants of the Eastern Foothills ' : 

 Francis Eamaley. 



The author exhibited a number of views 

 showing some of the more characteristic 

 plants of the eastern foothills of the Rocky 

 Mountains in Colorado. 



7. ' Some Protective Leaf Movements 

 induced by Winter Temperature ' : Wm. 

 Trelease. 



The paper records, with lantern illustra- 

 tions, observations upon the drooping and 

 inrolling of Rhododendron leaves and the 

 inrolling of leaves of Yitcea fiaccida, effected 

 when the freezing temperature is reached? 

 by which protection is secured against 

 undue radiation and evaporation. Eefer- 

 ence is made to Harshberger's paper of 

 1889, and Darwin and Acton's and Mac- 

 Dougal's text-books of plant physiology 

 which thus far appear to refer only 

 to Prunus laurocerasus and the genera 

 named. 



