6o 
First Report on Economic Zoology. 
G E 0 U P E. 
Animals which concern Man as causing bodily injury or 
disease, both possibly of a deadly character, to (A) his 
stock of Domesticated Animals, or (B) his Vegetable 
Plantations, or (C) to Wild Animals in the preservation 
of which he is interested, or (D) Plants in the preserva- 
tion of which he is interested. 
SUB-GEOUP A. ANIMALS WHICH CONCERN MAN BY 
CAUSING BODILY INJURY OE DISEASE TO HIS 
STOCK OF DOMESTICATED ANIMALS. 
Horse Worms and the Use of Thymol. 
The following enquiry was received from a correspondent at Fort 
Camden, Crosshaven, Co. Cork, regarding horse worms and their 
treatment : — 
“ Seeing several articles lately in the Field about the use of 
Thymol for the eradication of worms in horses, and on the 5th a 
letter from the Hon. Miss Dillon mentioning your name as having 
had a large experience in the use of Thymol for that purpose, I 
would be obliged to you if you would give me information on the 
following points: — The amount required for a mare 15*2, five years 
old ; the worms are about one inch long, small white ones. The 
mare has been out on grass all the summer till about a month ago. 
Should the mare be kept on bran mashes for a day or two before 
giving Thymol.” 
The following reply was sent : — 
“ From your description I imagine the worms in your mare are 
the Maw Worm ( Oxyuris curvula). Thymol has been found of great 
benefit for these nematodes, as well as for the armed strongyles 
(, Sclerostomum equinum, S. tetracanthum, and S. rubrum). The best 
plan is to give bran mashes the day before and then give the 
Thymol in sweet milk. Fifteen grains have been found sufficient 
early in the morning and again in the afternoon for all horses. 
