1903] GAMETOPHYTES AND EMBRYO OF TAXODIUM 133 
plasm of their own, though the outline of the cell seems to be 
neither so regular in shape nor so definite in outline as in other 
groups of gymnosperms. She finds no starch in the male cells, 
although much is present in the pollen tube. Miss Ferguson 
also suggests that the ‘‘spongy”’ tissue is useful in nourishing 
the prothallium, and brings out other interesting points, which 
must, however, be passed by here. 
Arnoldi, in the communication mentioned, finds starch in the 
sperm cells of Sequoia, Cryptomeria, and Taxodium, and notes 
its transference to the embryo. He also considers necessary 
the removal of Taxodium (and several other genera) into the 
Cupresseae ; but on certain points of fact in developmental pro- 
cesses our work does not agree. 
In the recent Belfast meeting of the British Association Mr. 
Harold Wager presented a paper on the function of the nucleo- 
lus, in which he is reported as finding that ‘this body, in the 
cases examined by him, appears to be intimately connected with 
the nuclear network, and contains chromatin material which con- 
tributes directly to the formation of the chromosomes ”’ (Nature 
67: 20. 1902). These results are of interest in connection with 
my conclusions. 
THE UNIVERSITY OF NorTH CAROLINA, 
Chapel Hill, N.C. 
LITERATURE CITED. 
ARNOLDI, W., ’99*: Beitrage zur Morphologie der Gymnospermen. I. Bull. 
Soc. Nat. Moscow 14 : 329-341. pls. 7-8. 18 
’99°: Beitrage zur Morphologie der Gymnospermen. II. Bull. Soc. 
Nat. Moscow 14: 405-422. pls, ro-17. 1899. 
oo: Beitrage zur Morphologie der Gymnospermen. III. Flora 87: 
46-63. pls. 7-37. 1900 
‘oo: Beitrage zur Morphologie der Gymnospermen. IV. Flora 87: 
“194- 204. fls. 6-7. 1900. 
BELAJEFF, W.,’91: Zur Lehre von dem starr ages der Gymnospermen. 
Ber. Deutsch. Bot. Gesell. 9 : 280-286. A/. 
"93: Zur Lehre von dem avait en der Gymnospermen. Ber. 
Deutsch. ie Gesell. 11: 196-201. A/. 72, 1893. 
BLackmany, H.,’98 : On the cytological featcas of fertilization and related 
phenomena in Pinus sylvestris. Trans. Roy. Soc. 190: 395~426. fils. 
12-14. 1898 
