142 The Botanical Gazette. [May, 
the neck to be frequently of two cells (figs. 1 and 2). In 
one instance I found the lower cell divided by a cross wall, 
thus making three cells in all (fig. 3). This, however, is ex- 
ceedingly rare for it was the only case observed out of the 
. large number of ovules sectioned. In Pinus sylvestris the 
cells of the neck formed two layers instead of one (fig. 4) as 
stated by Strasburger.‘ Four cells lie in one plane (fig. 4a), 
making eight cells in the entire neck. At the stage of de- 
velopment represented in fig. 4 the ventral canal cell had not 
yet been cut off. A very large nucleus lay just beneath the 
neck while the remainder of the cavity of the archegonium 
was filled with granular protoplasm staining deeply with alum 
cochineal and containing many large vacuoles. In figs. 1 and 
2 (Tsuga) the archegonium is mature, the ventral cama 
growth in Pinus sylvestris corresponds very nearly with ou 
burger’s account for Pinus Pumilio.2 A pretty well define 
matoge!, 
rge 
2k fs P13. 
Die Coniferen und die Gnetaceen, pp. 327, 328. (1872.) 
