New YorK AGRICULTURAL EXPERIMENT STATION. 169 
direct evidence on this point. It should be noted, however, that 
although the use of sod soil in carnation houses is a common prac- 
tice and the silver top of June grass is a common and widespread 
trouble, carnation bud-rot is comparatively rare. Moreover, it is 
quite possible that other plants besides grass and carnations har- 
bor the buid-rot Sporotrichum and the mite. Hence, it is doubt- 
ful if it is worth while to attempt to prevent bud-rot by eliminating 
erass and sod from carnation culture. 
DISCUSSION OF NEBRASKA STATION BULLETIN 
No. 103. 
“THE BUD-ROT OF CARNATIONS, BY F. D. HEALD.’ 4 
With the exception of one topic, Inoculation Experiments with 
Fungus, the senior author had practically completed his part of 
this bulletin before the appearance (in January, 1908) of Nebraska 
Station Bulletin No. 103 on the same subject. In order to avoid 
rewriting some parts we shall present here our comments on 
Dr. Heald’s work. 
In the main, Heald’s observations and deductions agree quite 
closely with our own. Some of the principal points of agreement 
are the following: | 
(1) The buds are the only part of the carnation plant affected 
(p. 14). 
(2) The Sporotrichum exists in the rotting petals in all cases 
and generally unaccompanied by other fungi (p. 9). 
(3) A mite is constantly associated with the Sporotrichum in 
affected buds (p. 9). | 
(4) The Lawson variety is especially susceptible to bud-rot 
(p. 13). 
(5) The Sporotrichum alone is capable of producing the disease 
(p- 9). 
(6) The most typical development of the disease was obtained 
from the inoculation of young buds (p. 9). 
(7) The mite plays only a secondary part in the production of 
the disease — it acts as the carrier of the fungus spores (p. IO). 
(8) In artificial cultures the Sporotrichum produces a deep red 
color (p. 12). 
Poy i. Gp Stewart. 
