6o First Report on Economic Zoology. 



GROUP 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 CONCEEN MAN BY 

 CAUSING BODILY INJUEY 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 he obliged to you if you would give me information on the 

 following points: — The amount requu^ed 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 

 {Sclcrostomurii equinum, S. tctracanfJiv/in, 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. 



