29 
wheat, as barley, rye, grasses, millet, and maize; and the determination 
of the most favorable form of treatment, particularly with reference 
to the degree of temperature required, the duration of the immersion 
in hot water, and the mode of cooling. 
Kansas State Agricultural College, 
Manhattan, Kansas. 
OBSERVATIONS ON THE DEVELOPMENT OF SOME FENESTRATE 
SPORIDIA. 
(Plates I & II.) 
By Charles E. Eairman. 
The following notes have been made on the development of the spo- 
ridia in Fenestella amorpha , E. & E.,* and in Patellaria fenestrata , C. & 
P.,t A few comparisons have been made with the spore development 
of Camarosporium subfenestratum , B. & C. 
In Fenestella amorplia we find the first stage of sporidial develop¬ 
ment to be represented by the formation of a finely granular proto¬ 
plasmic layer, in the interior of the ascus. Numerous spherical drops 
may also be seen a little later in this condensed protoplasmic layer. 
This layer was not seen to impinge upon the walls of the ascus at any 
point. 
A light-colored homogeneous fluid occupied the space between this 
layer and the walls of the ascus. Also it was noted that the granular 
layer did not touch the walls of the ascus at the top or apex. At first 
this layer appears quite homogeneous. We have designated it the tSpo - 
ridiogenie layer (Eig. 1, plate I). 
The sporidiogenic layer is generally broader at the apex of the ascus 
and narrows somewhat towards the base. In Patellaria fenestrata the 
same general characteristics of this layer will be found to exist. In 
this species the sporidiogenic layer is at times continuous with the base 
of the ascus, a condition of affairs which was not made out in the case 
of Fenestella (Eig. 14, plate II). 
The next feature observed in the development was the formation of 
larger spherical bodies in the interior of the sporidiogenic layer. These 
spherical bodies are the first indications of the forming sporidia (Figs. 
2, 3. and 4, Plate I, and Figs. 15 and 1G, Plate II). In Fenestella 
amorpha the number generally found was 8, and in Patellaria fenestrata 
4 (although more may be occasionally seen in the latter). As men¬ 
tioned above, the general outline is spherical, and they seem to be 
placed at nearly equal distances apart, in number corresponding to the 
sporidia commonly found in the ascus of the species under consider¬ 
ation. They are the forming or immature sporidia. Nuclei next make 
*Journ. Mycol., Vol. IV, p. 58. 
t‘28tli Report N. Y. State Mus., p. 08. 
