8 Vaizey. — On the Sporophyte 
former paper 1 in the sporogonium of Catharinea {A trichum). 
The peripheral portion of the columella consists of nearly 
cubical, or hexagonal cells, with longitudinal and transverse 
diameter approximately equal, while the central part of the 
columella is occupied by cells which are very distinctly 
elongated and narrow (Fig. io). The structure of the teeth 
of the peristome in this genus is so remarkable that I cannot 
pass it by without mention, although Lantzius-Beninga 2 did 
not omit to treat of it in his classical work on the peristomes 
of Mosses. On the radial walls of the cells which go to form 
the peristome there are a number of horizontal thickenings 
which in longitudinal section have a remarkable similarity of 
appearance to the thickenings in the protoxylem of Vascular 
Plants, and at the same time recall the thickenings in the 
elaters and cells of the walls of the sporangia of many 
Hepaticae. 
[Here the MS. ends. Other figures, besides those now published, were also 
found among Mr. Vaizey’s papers ; but as they were not referred to in the MS. 
and did not form any connected series, it was thought best not to publish them. 
This is especially the case with some drawings illustrating the development of the 
sporogonium, which Mr. Vaizey had begun to study in Sjblachnum vasculosum, 
but the series is too fragmentary to be of material use.] 
1 Vaizey, Anat. and Develop, of Mosses; Journ. Linn. Soc. vol. XXIV. 
3 Beit. z. Kenntniss des Baues d. ausgew. Mooskapsel, in besonderem d. 
Peristomes; Nov. Act. Akad. Leopold. Carol, vol. XXII, 1847, p. 577. 
