Handbook on contagious and infectious diseases in animals / issued by the Quartermaster General's Branch, General Headquarters, India.

Date:: [1944?]

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Handbook on contagious and infectious diseases in animals / issued by the Quartermaster General's Branch, General Headquarters, India. Source: Wellcome Collection.

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$If oi! has been allowed to dry on the objective it can be removed by applying more oil, and leaving for a short time, when it will become dissolved and the whole can be removed as above; or a little xylol will speedily remove it, but requires care, as xylol dissolves the cement keeping the lenses in position. THE PREPARATION OF MATERIAL FOR LABORATORY EXAMINATION. In almost every case where a laboratory examination is to be carried out, it should be made as soon after the material is removed from the body as possible. There should therefore always be the least possible delay in forwarding such specimens to the laboratory. In preparing specimens for laboratory examination it is very im- portant that al] reasonable precautions should be taken to prevent out- side air, or other contamination. ‘ The material te be supplied and the method of taking depend on the following :— \ (1) The disease in question, e.g., blood smears are indicated in Surra or Anthrax, pus swabs in Hpizootic lymphangitis; etc., etc. (2) The apparatus at hand—Laboratories can always supply cleaned microscopic slides and sterile swabs, and Veterinary Hospitals should always hold a supply of these. (3) The laboratory procedure indiciated, e.g., if sgglutination tests are to be carried out, blood or serum must be supplied. (4) The time elapsing before laboratory examination can be made, €.g., it is useless sending samples of faeces long railway journeys in hot countries. _ Particulars required.—After taking a specimen the following notes should be made on the spot, for completion of the pro forma which _ will be submitted, in duplicate, with each specimen sent to the Lebora- tory. A specimen copy of the pro forma is given in appendix ‘ B’. Hour and date. Class of animal. . Age and description. . Unit number, if any. Of at) eens . Place. . Condition of animal. If dead, date and hour of death. . Specimen supplied. 10. Preservatives used. 11. Diagnosis and short history of the case. 12. Name, rank and address of sender. Similarly each slide, tube, jar, etc., should be labelled on the spot with the animal’s number and the date the specimen was taken. Where a number of specimens are being taken at the same time it is particularly important that the above procedure shall be followed, in order that mixing amd confusion shall not result. DONIMO TR ON H$