520 JOURNAL OF SCIENCE, LITERATURE, AND ART. 
“Supplement to the Pharmacopoeia,” says, that the grey sulphuret 
of tin, formed by the sublimation of tin-filings, sulphur, and sal- 
ammoniac, is the basis of Blame’s powder for the distemper 
nr dogs. We believe that we can contradict this from authority, 
although we are aware that the stannum pulveratum (powdered 
tin) is used by many farriers and keepers as a remedy both for 
worms and distemper. J 
The next article is of some importance to us. Corrosive subli¬ 
mate, m the form of an almost saturated solution with tobacco, is 
the popular farriers remedy for mange in cattle. We once knew 
hve valuable covvs destroyed by it in less than- twelve hours after 
the application. The same solution is often used to destroy vermin 
on cattle, the horse, and the dog; and from licking the part on 
which the lotion has been applied, many an animal has been de¬ 
stroyed. The experiments of M. Fabian have proved that the 
mucilage of quince seed, and that of salop, will instantly decom- 
pose corrosive sublimate. J 
The paper “ On the Preparation of Food from Bones,” ex- 
tracted from the Annales de VIndustrie for 1829, is a most valu¬ 
able one, and opens a wide field for interesting and useful experi¬ 
ment. We will extract one paragraph:— 1 
“ One hundred kilogrammes (220lbs.) of butcher’s meat contain about 
twenty of bones. The meat will make about four hundred bouillons (messes 
ot soup); but the bones would serve to prepare six hundred ; so that, in ex¬ 
acting ad the gelatine from the bones of a given quantity of meat, three 
bouillons may be prepared from the bones, whilst usually both bones and meat 
only afford two.” 
We earnestly recommend to our readers the perusal of this 
paper (p. 200). It may be of very considerable advantage in 
the kennel, the kitchen of the farmer, and in our little esta¬ 
blishments. 
The process for preserving milk, invented by M. Kircoff 
(p. 203), is worth recording:—New milk is evaporated by a very 
gentle file, and very slowly, until it is reduced to a dry powder. 
This powder is to be kept in bottles, carefully stopped. When it 
1S rc em P lo y. ed > ^ * s onl y necessary to dissolve the powder in a 
sufficient quantity of water. Neither the peculiar flavour nor the 
nutritive property of the milk is lost. 
In page 208 are some valuable observations “ On the Gather¬ 
ing of Medicinal Roots/’ by M. Kittel, extracted from the Re- 
pertorium da Pharmacie :— 
“ Roofs should always be gathered in the autumn. This rule is without 
exception for all plants not annuals, with this difference, that the roots of 
biannitals should be gathered in the first year, whilst those of the rest 
may he gathered any year in their lifetime ; but roots gathered before (he 
