154 BOTANICAL GAZETTE. 
Gro. M. Srerypere, Methods of cultivating micro-organ- — 
isms. 
EK. Lewis Srorrevanr, Influence of insulation upon vege 
tation. ae 
L. F. Warp, The fossil flora of the globe; historical view, — 
ie 
geological view, botanical y 
W 
ac 
types, had often undoubtedly peculiar vegetative structures, Mt 
their reproductive organs were not materially different from the 
forms of the present time, and they will all fall into groups esti! 
lished upon living forms. Prof. Ward in re lying said there we'® 
at present three great schools of paleobotanists: the English, fl 
resented by Mr. Carruthers and Mr. Stevenson, the French, ™? 
resented by M. Saporta and others, and the Swedish school, et" 
with its special views. Prof. Macloskie mentioned the great g"? 
that undoubtedly exists just before the almost simultaneous? 
pearance of the Apetale, Polypetalee and Ga-opetale. ™ 
John Ball pointed out that very likely the originals of the ree 
tyledons were largely lost through unfavorable conditions “s 
their preservation. ae 
The papers of Dr. Minot called forth a vigorous discuss!” 
between botanists and zoologists and between American and # ee 
lish scientists. He said in the first vaper that the Linnead §)*" 
fem of nomenclature in its original significance has really 
come obsolete, although the majority of naturalists may 
aware of the fact, and based this statement on the gradual 
proximation of the number of species to the number of g@! 
Mr. Carruthers dissented from this view, and said that 0” 
