1884. ] Botany. 421 
to be made of columnar radially-placed cells, which, from their 
relation to the contiguous tissues, are c early to be regarded as 
modified epidermal cells. They were filled with minutely glandu- 
lar contents (Figs. 2 and 3, @) of a faint amber color. Beneath 
the ee there are several layers of chlorophyll-bearing 
cells (å). 
these becoming gradually thinner as they pass inward, as shown 
in Figs. 2 and 3. For comparison, a superficial view of the ordi- 
J hive —A cross-section of a glandular swelling; a, gland cells; 4, green cells; 
» and g, fibrovascular bundles; ¢, fibrous tissues. FIG. 2.—Cross-section of gland 
r 
Spe >a d een cells, IG. 3.—Longitudinal radial section of same. € 
Begar 73 view of gland cells. Fic. 5.—Superficial view of ordinary epider- 
o 
lucida coke pedicel, taken just above the glandular swelling. From camera 
eh Epidermal cells of the pedicel, taken just above the glandular 
ae IS here reproduced in Fig. «. 
apo T glands remind one, in their position, of the sticky belts 
is 7 the pedicels of certain species of Catchfly (Szene) and one 
2 €mpted to ask whether they have not the same functions in 
ie Sey. . 
s es.— C. E. Bes 
aA ALITY. IN ZYGNEMACE®.— A paper was read [before the 
aa Society, Nov. 15, 1883] by ME. A. W. Bennett, on the 
As it ag of the Zy gnemacee, as a solution of the question— 
Since io character? De Bary, twenty-five years ago, an 
o ual differ. Wittrock, have instanced what they have deemed sex- 
Writers ee between the conjugating cells, though most later 
Beane nt Snore essential physiological distinctions. Mr. 
has directed his investigations chiefly to the genera Spi- 
