70 QUEENSLAND AGRICULTURAL JOURNAL. [1 Juny, 1899. 
Gas-lime, or ordinary stone-lime, may again be resorted to for forming a 
barrier for protecting plots or larger areas of ground, or indeed individual plants. 
So also ordinary soot. These, however, present the drawback of having their 
essential protective qualities impaired by rain. 
Again, the slugs may be poisoned by taking advantage of their partiality 
for any farinaceous meal. To this some arsenical com ound—e.g., Paris ereen 
or London purple—is added for the purpose. The fabian however, of this 
method is not recommended, as the toxic agent is slow in its operation and 
permits the animals to wander off. 
Finally, there is the method of trapping or hand-picking. The latter opera- 
tion is most successfully resorted to after nightfall. Owing, however, to the 
fact that the colour of the slug harmonises to a marked extent with that of the 
‘soul, many individuals always escape observation and capture. Moreover, it is a 
back-racking work, much more exacting, it is stated, than is ordinary digging. In 
trapping, objects are laid upon the ground overnight and visited during the 
following morning. Old boards or wet sacks are useful in this connection. 
So also are slices of vegetables, especially tomatoes, potatoes, turnips, and 
: 8 2 ESP ) 
pumpkins. 
The extermination of the pests as urged in some quarters, is now altogether 
impracticable. This also might have been with truth affirmed fifteen years 
‘since, when its occurrence in the Brisbane district first came under notice. 
Descriprion or Prarr. 
A.—Vaginula Hedleyi, Simroth : One individual in act of ovipositing, eggs issuing from lateral 
-opening. 
B.—Vaginula Leydigi, Simroth. Feeding on cabbage-leaf. 
Natural size. From photograph by F. C. Wills. 
Animal Pathology. 
TUBERCULOSIS IN SPAYED COWS. 
MEASURES NECESSARY FOR PROTECTING CATTLE FROM 
INFECTION WITH TUBERCULOSIS DURING THE PROCESS 
OF SPAYING. 
Iv October, 1898, an article on the above subject by Mr. W. C. Quinnell, 
M.R.C.V.S. Lond., Government Veterinary Inspector, inthe Journal, awakened 
much interest in grazing circles; and we have been requested to republish a 
portion of the article, dealing with the 
NECESSARY MEASURES FOR PROTECTION, 
Under this head, Mr. Quinnell wrote as follows :— 
If it were possible to estimate the diminution of wealth which occurs by 
reason of preventable losses among stock, even in the course of 1 year, many 
no doubt would be considerably astonished. 
I speak designedly of avoidable losses, for many cattle could be saved by 
the application of scientific principles and resources, especially when the 
methods which science would dictate in such cases are not difficult to under- 
‘stand nor to exercise. ; 
It has been shown also that the disease is a contagious one; hence the 
mecessity in the selection of subjects and strict antisepsis. 
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