THE 
VETERINARIAN. 
VOL. XLVI. 
No. 543. 
MARCH, 1873. 
Fourth Series. 
No. 219. 
Communications and Cases. 
CONTRIBUTIONS TO OUR KNOWLEDGE OE 
THE GROUSE DISEASE, INCLUDING THE 
DESCRIPTION OF A NEW SPECIES OF EN- 
TOZOON, WITH REMARKS ON A CASE OF 
ROT IN THE HARE. 
By Professor T. S. Cobbold, M.D., F.R.S., F.L.S., Lec¬ 
turer on Parasites and Parasitic Diseases at the Royal 
Veterinary College. 
Although I have already published some notes on the so- 
called grouse disease, it has been thought that a more pre¬ 
cise record of the facts observed, together with a description 
of the parasite which I found in such abundance, might 
prove acceptable to the profession ; and fortunately, through 
the kindness of Mr. Alexander Stables, the Earl of Cawdor’s 
steward, I have enjoyed fresh and repeated opportunities of 
re-investigating, confirming, and adding to the data already 
enunciated. 
With the exception of a few more or less considerable 
omissions, and one important correction, the following quota¬ 
tion forms the substance of my original communication to The 
Field for. Nov. 9, 1872 (p. 450). It is necessary to give these 
earlier details in order to render the subsequent particulars 
intelligible to those who have not had access to the previous 
record. 
“On the 2nd of Nov., 1872, I received from Dr. John 
Millar a batch of grouse, several of which had died of the 
disease.’ They had been transmitted from Cawdor Castle, 
Naim, along with a communication, from which I was per- 
XLVI. 12 
