NEw YorRK AGRICULTURAL EXPERIMENT STATION. 157 
to 24 », the most common size being 15 »: (2) A fungus with 
unbranched, colorless, seemingly non-septate hyphe having a 
diameter of about 2. (Plate VI, Fig. 3.) Neither fungus 
showed any fructification and neither one was determined. 
Subsequently to our study of the fungus in June Mr. Hallock” 
prepared for publication a brief article on the subject, which 
appeared in the Rural New Yorker for July 27,1901. In addition 
to the circumstances which we have already related, he states 
that the tile drain was put into place in the autumn of 1900 to 
replace a stone drain which, although it had not run as freely 
as it should, had, nevertheless, never become completely clogged 
during the several years in which it was in operation. The new 
tile drain was made of three-inch porous tiles and worked all 
right during the fall and winter, but clogged in the spring ata 
time when there was plenty of rain to keep the drain flushed out. 
In the fall, at cider making time, considerable pomace is run off 
through the drain, and had it clogged at that time it would have 
been less strange. 
In this connection it is interesting to note that Mr. Beak’s 
barnyard drain at South Onondaga had been in place fifteen 
years before it became clogged. He removed the fungus by 
mechanical means. In his recent letter to us he states that he 
did not use the sulphuric acid recommended by the Country Gen- 
tleman; neither did he use any other chemical, and yet the drain 
has not clogged since the spring of 1896. Last spring he again 
saw indications of the presence of the fungus, but by turning a 
large quantity of water into the upper end of the drain he suc- 
ceeded in washing out the fungus and prevented clogging. 
Mr. Hallock’s method of clearing his drain of fungus by the 
use of copper sulphate is so simple and so cheap that it is 
worthy of recommendation in all cases of this kind. Sulphuric 
acid, carbolic acid and other strong chemicals are also destruc- 
tive to fungi and may, perhaps, answer equally well. 
We think it likely that the clogging of drains by fungus may 
be more common than is generally known. 
“H[allock], H. H. Blue Vitriol Cleans a Drain. Rural New Yorker, 
OU 1D. 
