160 EXPERIMENTAL FARMS. 
63 VICTORIA, A. 1900 
Subjects requiring special attention since I last reported were the following :— 
Tue Hessran Fry.—A serious outbreak in Manitoba. 
Tse Rocky Mountain Locust.—This insect again appeared in some numbers in 
southern Manitoba, but was not the cause of an appreciable diminution in the crops. 
The exceptionally wet and late season in Manitoba during the past summer was 
unfavourable for its early development and spread, and the farmers, having been stirred 
up to an appreciation of the danger of allowing this insect to remain undisturbed, 
ploughed down the greater part of the stubbles this autumn, thus burying the eggs too 
deeply for the young to emerge next spring. 
Tue Destructive Pea Apuis.—One of the most notable outbreaks of the year was 
by a plant-louse which has been given the above name but which before this year was 
unknown. 
Roor Maacors.—Some experiments against these destructive enemies of the 
gardener were tried last season with many different substances, but so far without very 
satisfactory results. Mixtures containing some form of carbolic acid were most useful. 
Tue Diamonp-Back Motu (Plutella cruciferarum, Zell.).—Late in the autumn 
there was in eastern Ontario a widespread and severe attack upon cabbage of various 
kinds, rape, and turnips, by this insect, which has been well known for many years as 
an occasional pest of these plants, and was fully treated of, and figured, in my report 
for 1890. In Farm Insects, by John Curtis, 1860, the same insect is described and 
well figured as the Turnip Diamond-back Moth. 
Tue AsPARAGUS BEETLES.—Two new enemies of the gardener have appeared in 
Canada for the first time this year, the two Asparagus Beetles. These are treated of at 
some length later on. 
ad Tent Carerpittars.—Orchard and shade trees were again this 
ge year seriously injured throughout the greater part of Ontario and 
t= Quebec by the caterpillars of the two common species of Tent Cater- 
* pillars. Nothing new can be added as to remedies ; these consist of 
the collection of eggs in winter, the destruction of the nests and 
clusters of young caterpillars in spring, and last, but most important, 
the spraying of trees with poisonous mixtures as soon as possible after 
the hatching of the eggs. The last operation, when performed care- 
fully, is a never-failing remedy. 
Bark-Lice.—The San José Scale and several other allied species 
of scale-insects have naturally been the subject of much correspond- 
5 ence. Thorough experiments are now being carried out by specialists 
EY? i in all parts of North America with the hope of discovering a practical 
sk Sh aaa Glia remedy. Several materials have given good results which with ordin- 
pe“ ary insects might be considered all-sufficient remedies, but with the 
San José Scale it seems inadvisable to recommend under the existing 
laws which have been passed by the Federal Government and those of Ontario and 
British Columbia that fruit growers themselves, should be allowed to treat their trees 
with any of the materials which, up to the present, have been claimed to be ‘sure 
remedies,’ such as pure kerosene, the same mechanically mixed with water, and crude 
petroleum. 
Tue Apricot ScaLe (Lecaniwm armeniacum, Craw).—Another scale insect from 
California, which in some way has been introduced into the Eastern States, and is 
spreading there to some extent, has been found in two or three orchards at Sher- 
brooke, Que. 
