THE HORSE. 



85 



and membranous, can be preserved in com- 

 mon New England rum. 



Turpentine. — This also is an excellent 

 antiseptic, and is highly recommended by- 

 Parsons and others, for cartilages, fibro-car- 

 tilages, and fibrous membranes. 



The acids used are, sulphuric, nitric, mu- 

 riatic, acetic and pyroligneous. Dr. Parsons 

 states that Dr. Hayden, surgeon dentist, in 

 Baltimore, has succeeded in preserving 

 anatomical preparations in a superior man- 

 ner, with pyroligneous acid. It should be 

 rectified and diluted with water. Acids, 

 however, cannot be used when the prepara- 

 tion contains bone. 



METHOD OF PRESERVING THE BRAIN. 



The following mixture is a very excellent 

 menstruum for preserving the brain and 

 nerves : Take alcohol, eight parts by weight; 

 oxymuriate of mercury, one part. E-ub the 

 oxymuriate in a mortar, and gradually add 

 the alcohol. The brain should remain in 

 this mixture for twenty or thirty days, when 

 it may be withdrawn from the liquid, dried, 

 and varnished. 



METHOD OF MAKING A DRY PREPARATION OF 

 THE AIR-VESSELS OF THE LUNGS. 



Throw the lungs of a horse into a barrel 

 of vv^ater and allow them to macerate for 

 several months, during the summer season ; 

 then, by repeated washing, cleanse the bron- 

 chia, etc., from the parenchyma, dry, and 

 varnish them. 



METHOD OF MACSRATING AND CLEANING 

 BONES. 



Remove as much of the flesh, ligaments, 

 etc., as can conveniently be done with the 

 knife ; then lay them in clean water, and 

 change the same daily for about a week, or 

 as long as it becomes discolored with blood. 

 They are now to remain without changing, 

 till putrefaction has thoroughly destroyed 

 all the remaining flesh and ligaments, which 

 will take from tliree to five months, more or 

 less, according to the season of the year or 

 temperature of the atmosphere. ' In the ex- 

 tremities of large cylindrical bones, holes 



should be bored, about the size of a quill, 

 to give the water access to their cavities 

 and a free exit to medullary substance. As 

 the water evaporates from the vessel, it 

 should be so far renewed as to keep the 

 bones under its surface, or they will acquire 

 a disagreeable blackness, and dust should 

 be excluded by keeping the vessel constantly 

 covered. When the white textures are de- 

 stroyed, the bones must be scraped and 

 again laid in water for a few days, and 

 well washed and scrubbed with a coarse 

 brush ; then immerse them in lime-water, 

 or a solution of pearlash, made with two 

 ounces to the gallon of water, and after a 

 week they are to be again washed in clean 

 water. They are then to be bleached on 

 the seashore, where they can be daily washed 

 with sea-water.* 



M. Bogros approves of the above plan of 

 maceration, but at the conclusion of this he 

 directs them to be boiled four hours in a 

 strong solution of carbonate of potass, or 

 in soap suds, adding hot water as fast as it 

 evaporates. They are then to be washed 

 frequently in cold water, and dried each 

 time quickly, and then moistened (not 

 steeped) in weak muriatic acid. The com- 

 mon bleaching liquor in a diluted state will 

 whiten bones, but they should not be im- 

 mersed in it any length of time. 



When bleached, they may be varnished 

 with the white of an egg.f 



TO RENDER SOLID BONES FLEXIBLE AND 



TRANSPARENT. 



One-half of the inferior jaw bone, or the 

 scapula, are the most suitable bones for the 

 above purpose. Macerate either or both 

 until they are properly cleansed. Then im- 

 merse in a mixture consisting of water, 

 twenty -fiveparts ; muriatic acid, one part. If 

 the bone is kept well covered Tiuring a 

 period of about seven months, it will become 

 flexible like cartilage ; but as the phosphate 

 of lime in the bone will neutralize some of 

 the acid, a minute quantity may from time 

 to time be added. 



* Pole on " Cleansing Bones." 



t Parsons on "Macerated Preparations." 



