165 BOTANICAL GAZETTE 
origin is it to be compared with the blepharoplasts of plants, In son 
he was able to determine that the portion of the male sexual cell 
derived from the nucleus of the mother cell contains a larger p 
nuclein than the nucleus of the female sexual cell. The 
botanists and zoologists have not yet determined the nature of the 
that the sperm exerts upon the egg in normal fertilization, but ev 
accumulating, and the present paper adds some interesting facts 
the chemical behavior of the sperm cells of animals and plant 
J. CHAMBERLAIN. 
ARNOLDI*3 has made another contribution to our snow mo} 
ogy of gymnosperms. The previous papers of the series have already 
reviewed in the GAZETTE. The present paper deals with Sequoia and 
members of the Sequoiaceae, namely Taxodium, Cryptomeria, 
hamia, Arthrotaxis, Glyptostrobus, and Sciadopitys. As! : 
ina paper dealing with so many and such inacessible gen 
In Peatachewic sinensis i gre are ner NS archespori 
1 ment. 
embryo sacs attain a bl deg ree develo 
virens, in which the development at the middle of the endo: 
that at both ends. The archegonia occur singly or in g 
numerous as in S. sempervirens. There are two neck cell 
canal cell. In Taxodium, pst Lascbpinie and — 
nous, and nometimes separates from the rest of the egg: 
cell is formed. 3 
In Sequoia Sempervirens at the time of fertilization 25 
tains two male cells and two free nuclei, one the nucl 
sterile cell of the generative pes ‘No ‘vegetati 
: pe ruge age is formed. The body cell contains § 
— ‘Umeruchungen der Rael vate ind aer ‘Egpiie 
——, PP 1-28. ee ae Anh 
