[Vor. 8 
6 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
wise into the mesophyll of affected leaves. Comment is made 
on the fact that the death of the cells ensues when very 
few hyphae have penetrated the tissues. 
A review of the earlier work on ‘‘la toile" in France is 
presented by Beauverie (’99) who calls attention to the fact 
that the fungus producing this disease has been considered 
by some to be Botrytis cinerea, and by others to be Acros- 
talagmus albus, a determination made in one instance at least 
by Oudemans (’92). This determination was based on mate- 
rial received from the Zodlogical Garden at Rotterdam. 
Beauverie obtained cultures but fails to describe how the fun- 
gus was isolated. From these cultures he was able to obtain 
only a sterile fungus, which, unfortunately, is not described. 
Failing to obtain spores he then proceeded with cultures origi- 
nating from Botrytis cinerea. By growing this organism in 
a moist atmosphere at a temperature of about 33°C. a sterile 
form was induced. Again, by exposing cultures to a tempera- 
ture somewhat lower, he affirms that he was able to develop 
a temporary sterile stage. It would appear that on the basis 
of these results he draws the conclusion that the first organism 
isolated represented also a sterile form of the Botrytis. He 
further emphasizes the point that the sterile form is the more 
dangerous in the production of disease, leading to the infer- 
ence that conditions resulting in the development of this stage 
predetermined the prevalence of the malady. It is unsatisfac- 
tory to attempt to draw conclusions from this work, but it is 
at least probable that his first cultures may have been Rhi- 
госіота, and that, however accurately the work with Botry- 
tis may have been carried out, it had really no connection 
with ‘Ја toile.’’ 
Lindau (’08) follows his discussion of Rhizoctonia with a 
paragraph dealing with the fungus producing disease in the 
eutting-beneh and propagating-houses. The organism is de- 
seribed on the basis of the observations of Sorauer (799) and 
Aderhold (297), reference being made to the characteristic 
mycelium and chains of short cells, as well as to the occurrence 
of sclerotia. He questions the relationship with Monilia, sug- 
