912 THE BOTANICAL CONGRESS AT FLORENCE. 
May 18th.—The second meeting of the Congress took place on : 
Monday, at one o’clock. Prof. Schimper proposed M. Alphonse De Can- 
dolle as president, who, after returning thanks, called on M. Carl Koch 
toreadhi icati B s. M. Koch exhibited several speci- 
mens which had been sent to the exhibition by Prince Troubetzkoy. 
of the pollen grains of Conifere. He observed that there were 
types ; in the first there are no traces of division, such as is the case 
in Sequoia; in the second type, as in Zhuia, there are indicationsof 
division ; and in the third there is a true division with partitions, 38 
is seen in Pinus and Abies. The author concluded by comparing 
f 
these pollen-grains with the reproductive organs ome of 
paper was read by ofer on some an 
stems belonging to the Sapindacez, which includes some of the 
me 
nists to be Alge, whilst the hypha is looked upon as a4 Fun 
Lichen thus consisting of two distinct plants combined. 
t ; 
co-existent. M. Famintzin did not think that the question ¢) 
be thus disposed of, as it had been, he believed, estab . 
tie Gonidia 
—Mr. Hiern read a paper on the value to be attached to referred 
i i es which h 
ian th er benacee. rich De candoll 
ussion on the nomenclature of fossil plants, in which ¥° ~ pete, 
Schimper, and others joined, M. Chevalletie exhibited 4 
germs. M. ntatio® 
the process takes place by se6™ the de 
