214 QUEENSLAND AGRICULTURAL JOURNAL. [1 Mar., 1902. 
and attempts that have hitherto been made to secure its development under 
conditions of experiment in different artificial media have not been attended 
with any positive results. And in this connection it may be mentioned that 
externally sterilised grapes exhibiting rot disease have been kept by the author 
for twelve months, with the outcome that their condition at the conclusion of 
this period has been such as to indicate that the Dematium or resting stage of 
the fungus will not develop in free air. This apparent occurrence, it may be 
added, of such striking vital distinctions pertaining to two different phases in 
the life history of a single organism—afforded by its developing in ordinary 
air during one stage of its existence and its refusing to do so at another—is a 
most remarkable incident. 
With regard to the means by which the malady becomes communicated 
from diseased to healthy vines, it may be added that there are grounds, afforded 
by field observations, for concluding that this may be through the agency 
of the minute spores that occur so numerously in the Exobasidium stage of the 
parasite and are found developing on the surface of affected parts. These, it 
may be added, are oblong and less than s45 inch in length. 
In conclusion, it may be added that an organism, apparently identical with 
the one associated with the grape fruit rot described, has been found by the 
writer on apricots (Sardinia variety), grown on the same Darling Downs farm 
that yielded one of the examples of affected grapes described. It is possible, 
however, that in its case a distinct organism is concerned, indistinguishable in 
the Exobasidium stage from the one accompanying Grape Rot. 
FEED BOX FOR GREEDY HORSES. 
For preventing, or at least moderating, the greedy propensities of a horse, 
and particularly for circumventing the practice of the animal which bolts its 
food, a device such as is shown in the accompanying diagram may be resorted 
to. It is easily made, and the cost is trifling. The horse can get only a small 
mouthful of grain at a time, and is thus induced to chew it thoroughly. At the 
Se ee ee 
back of the box is a receptacle for the grain, which falls in a steady stream into 
that portion from which the animal feeds. At the bottom of the shute is a 
bevelled board, upon which the grain falls, passing it well into the feed box in 
small quantities. The slot at the bottom of the board must not be more than . 
3-inch in width, and may extend the whole length of the box, or for a less 
distance if deemed necessary. The grain is poured in at the top of the shute. 
