156 
THE BOT OF THE HORSE. 
“ It has been resorted to in cases of debility, accompanied 
with emaciation, supervening inflammatory attacks, and also 
influenza in the horse ; threatening the formation of tubercles 
in the lungs, or phthisis pulmonalis. It likewise has been 
found to arrest the progress of chronic diseases, especially of 
respiratory organs. 
“ The dose may be eight ounces at first, given two or three 
times in the day, and which may be gradually augmented to 
double this quantity, withholding it for a time should in- 
appetence or nausea take place. 
“ Tests . — Its colour, taste, and smell, appear to be the only 
tests on which any reliance can be placed.” 
In conclusion, We feel pleasure in repeating the expression 
of our warmest recommendation of the e Manual’ to the 
veterinary student, and, we may add, to such veterinary 
surgeons, likewise, as feel the want of a pharmaceutical re- 
membrancer; inasmuch as they will find, in the present 
edition, that matters are brought up to the existing standard 
of pharmacological science, at the same time that it bears 
ample evidence of enlargement, with improvement, over pre- 
ceding editions. 
Foreign Department. 
ON THE BOT (OR (ESTRUS) OE THE HORSE. 
By Professor Guiseppe Lessona. 
As to the number of the species of those insects whose 
larva inhabit the stomach of mucolactylis, contrary to the 
accounts of Bracy Clark, Meigden, Macquarr, and others, 
in my opinion, there is but one ; though there exist slight 
differences in the colour of the down of the face, in the hair 
upon the chest, in the rings round the abdomen of the animal, 
such variations are but accidental, dependent on the locality 
in w : hich they happen to be found ; having myself proved 
that such insects as come out of larvae that have been lodged 
in rotten oak trees are of a darker colour, while such as come 
out of the dust of the poplar tree, or out of sand, are lighter 
coloured, and clearer. However this may be, the lodgment 
of larvae in the oesophagus, stomach, and duodenum is 
