22 MEDICINES AND THEIR DOSES. 



G parts of linseed or olive oil, is a cooling application 

 for blistered or contused surfaces. An equally valuable 

 astringent and anodyne is Goulard's extract, 1 part, vas- 

 elin or glycerine, 6 to 8 parts. Equal parts of Goulard's 

 extract and alcohol, diluted with 8 to 10 parts of water, 

 make a useful refrigerant astringent. 



Lead Iodide is occasionally prescribed as a gland stim- 

 ulant, and applied as a dressing for ringworm and indo- 

 lent tumors. Used as ointment or plaster. 



Linseed Oil. — As a purgative horses take \ to 1 pint; 

 cattle, 1 to 2 pints ; sheep and swine, 6 to 12 oz. ; shaken 

 up in linseed gruel, milk, &c. For horses and cattle it 

 is sometimes mixed with a well-made bran mash. 



Magnesia. — Colts and calves of 3 or 4 months old, 

 take, as an antacid, i to 1 dram. It is conjoined with 

 carminatives and given in milk or gruel. Carminatives 

 allay pain. 



Magnesium Sulphate (Epsom Salt). — As a purge, 

 given in 10 or 15 parts of water, cattle take 1 to \\ lb.; 

 calves of 2 or 3 months, 3 to 4 oz.; sheep and swine, 4 

 to 6 oz. To expedite purgation and prevent nausea and 

 griping, add a dram of ginger to the oz. of salt. One- 

 fifth or one-eighth of these doses are often effectual in 

 removing indigestion, keeping up the action of other 

 cathartics, and as febrifuges and alteratives. On horses, 

 when given alone, it is uncertain. For febrifuge and al- 

 terative purposes, in any class of patients, it is conjoined 

 with niter, mineral acids, gentian, and other bitters. Ca- 

 thartics are either purges or laxatives. Febrifuges are 

 opposed to or abate fever. Alteratives are supposed to 

 produce salutary changes in diseases, but without excit- 

 ing any sensible evacuation. 



Mercurous Chloride (Calomel).— As an alterative and 

 febrifuge horses and cattle take 10 grains to 1 dram; 

 sheep and swine, 5 to 30 grains, usually 2 or 3 times a 

 day, and frequently with equal weight of opium, to pre- 



