236 POULTRY DISEASES 



Action — Allays irritation. 



Indication — Catarrh of the head. 



Use — Same as oil eucalyptus, which see. 



MERCURIC CHLORID, CORROSIVE (Corrosive Sublimate) 



Source — A heated mixture of mercuric sulphate 20 parts, sodium 

 chlorid 16 parts, manganese dioxid 1 part. 



Properties — Heavy, colorless, rhombic crystals, odorless, and hav- 

 ing an acrid or persistent metallic taste. Permanent in air. 



Action — A severe caustic. 



Indications — May be used in contagious bowel diseases in fowls 

 in drinking water. To each gallon of water add 6 grains mercuric 

 bichlorid and 3 grains citric acid. It may be used in a solution of 

 one, to one-thousand, as a disinfectant. 



IVIERCURIC CHLORID (Mild) (Calomel) 



Source — Heat mercurous sulphate and sodium chlorid. Calomel 

 sublimes. 



Properties — A white, impalpable powder; odorless and tasteless, 

 permanent in the air. Insoluble in water. 



Action — A cathartic. 



Dose — For adult fowl, 3 to 5 grains. 



NAPHTHALENE (Naphtalln) 



Source — A hydrocarbon obtained from coal tar by distillation be- 

 tween 356° F. and 482° F. The impure naphtalin resulting is treated 

 with sulphuric acid and sodium hydroxid, and is further purified by 

 distillation with steam, and then by a mixture with strong sulphuric 

 acid and finally by distillation. 



Properties — Colorless, shining, transparent laminae, having a 

 strong characteristic odor resembling that of coal tar, and a burn- 

 ing aromatic taste. It is slowly volatilized on exposure to air. 



Action — An excellent destroyer of parasites. 



Uses — As a powder in nests to destroy lice. Dissolved in kero- 

 sene (from 5 to 10 per cent) to saturate perches to kill mites. Five 

 per cent in vaselin as an ointment in scaly legs. This ointment 

 gives good results in sore head. 



MUX VOMICA (Powdered) 



Source — From the seed of the Nucis vomicae. 



Indications — Indigestion, paralysis, loss of appetite. 



Action — Powdered nux vomica is a bitter tonic, increasing the ap- 

 petite, gastric secretion, and motion. A nerve stimulant. 



Dose — For adult fowl, ten to twenty grains, repeated three times 

 a day. May be given in capsule or doughball. As a tonic, one-half 

 ounce in mash to each 12 hens. Twelve "stroke measure" teaspoon- 

 fuls of nux vomica make one ounce. 



PETROL OIL 



A neutral thick oil used as a vehicle in which to mix liquid prep- 

 arations. 



PETROLATUM (Vaselin, cosmolene) 



Source — A mixture of hydrocarbons, chiefly of the marsh gas 

 series, obtained by distilling off the higher and more volatile por- 

 tions from petroleum and purifying the residue when it has the 

 desired consistency. 



