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ence it was almost indistinguishable from fresh-meat ; the colour was 

 slightly paler, owing no doubt to the action of the water in whicli 

 it had been frequently immersed. It had a faint odour of nitrous 

 acid. It was cooked by boiling, the water being changed three times 

 during the process, and the boiling continued three hours and a-haK. 

 In colour and consistence not distinguishable from fresh-meat cooked 

 in the same manner. Taste tender and good ; fat particularly fine. A 

 piece of the uncooked meat left freely exposed to the air, dried up in 

 twelve months, to a hard, brown, shining mass, contracting very much 

 in size. A few mouldy-looking spots appeared on the surface ; did not 

 putrefy. A piece of the cooked meat freely exposed to the air, was 

 fly-blown, and in ten ddjs decomposition had commenced. The water 

 in which the meat was boiled had an odour of niti'ous acid. 



Experiment 2. — Placed a piece of lungs in a stoppered bottle, and 

 filled up with binoxide of nitrogen at the pneumatic trough. Result : 

 At the end of thirty-eight days, colour a little deeper red ; slight odour 

 of nitrous acid. Offered to a cat, but refused ; when offered after 

 being boiled, immediately eaten. 



Experiment 3. — Prepared a similar bottle, to be kept in a place 

 shaded from light, and at a temperature varying from_70" to 76° Fahr. 

 Result : Colour not changed. In other respects as in Exp. 2. 



Experiment 4. — Prepared another bottle, to be kept at a temperature 

 varying from 76° to 93° F., with full exposure during the day to the 

 light of the sun. Result : Colour changed to a dark red in a few hours 

 when exposed to the direct light of the sun. After sixty days, much 

 diminished in size. When exposed to the air, it dried up to a hard 

 mass without putrefying. 



Experiment 6. — Placed in a bottle of binoxide of nitrogen, a quantity 

 of brain tied up in a sheep's bladder. Result : At the end of forty-eight 

 days, unchanged in appearance ; slight odour of nitrous acid. 



Experiment 6. — Treated a quantity of blood in the same manner. 

 Result: As in Experiment 5. 



Experiment 7.— A quantity of blood with a putrid odour, was treated 

 in the same manner. Result : The bad odour remained unchanged. 



Experiment 8. — placed a piece of fresh hide in a jar of binoxide of 

 nitrogen. F>,esult : After seventy days, free from taint ; skin much 

 thickened, hair loose, and colour changed. Brown hair had become 

 yellow. When exposed to the air, the skin dried, hardened, and con- 

 tracted ; did not putrefy. 



Experiment 9. — Placed about four ounces of beef in a bottle of 

 bino.xide of nitrogen, supporting the beef on a piece of wood tlirust 

 through it : kept the bottle at a temperature varying from 76° to 9^j° F., 



