Ill 
The use of "blood and bone," with hellebore, was siigg'ested to 
us by a gardener, who reported that some of his cabbages had been 
protected from this maggot by this means, while plants not so 
treated were seriously damaged by it, as in previous years. We 
tried this material this year (1910), placing a small quantity of the 
dry mixture about each cabbage plant after transplanting to the 
field, but, unfortunately for the test, the maggots were not present 
in injurious numbers either in the treated or untreated plots, and 
therefore no definite conclusions were reached. Upon examining 
the "blood and bone" around the plants, however, we found in it 
many maggots wdiich were bred to adults and determined as 
Pliorbia fiisciccps Zett. — a species closely related to the cabbage and 
onion maggots, and often injurious to the same crops. The same 
species infested "blood and bone" wdien applied to onions, the mix- 
ture being in this case drilled in on each side of the row. Altho 
no recommendations can be made from these tests, it is thought 
best to make brief record of them. 
The Cabbage Plant-louse 
ApJiis brassiccr Linn. 
During midsummer or early fall this plant-louse becomes notice- 
ably abundant on cabbage and cauliflower plants, usually infesting 
tlie under sides of the leaves in large, packed colonies, which rapidly 
Fig. 7. Cabbage Plant-louse, Aphis brassiccc, on head of cabbage. 
