ceo 3 



IV. Additional proofs of animal heat being influenced by the 

 nerves. By Sir Everard Home, Bart. V. P. R. S. 



Read November 16, 1825. 



1 HE conclusions drawn from my experiment upon the 

 deer's horns, published in the last volume of the Philoso- 

 phical Transactions, are so important, that I felt it a duty to 

 repeat the experiment in the ensuing season. 



This I have done, and have the satisfaction to find that 

 the result agrees in every respect with that drawn from the 

 first experiment. 



For the present experiment, I was furnished with a buck of 

 full head, seven years old, and in good condition ; the former 

 not having suffered from what was done in any respect 

 whatever. 



As several disadvantages had arisen in the former experi- 

 ment from the horns having been bored ; they were now pre- 

 vented by applying a cincture of knitted worsted round that 

 part of the palm, the heat of which was to be ascertained, 

 three inches broad ; and the bulb of the thermometer was 

 received between this and the velvet of the horn. As soon as 

 the temperature was taken, the cincture was removed. All 

 liability to external injury was precluded, by confining the 

 animal in a stable. 



A circumstance favourable to put the result of this experi- 

 ment to the severest test was, the heat of the atmosphere 

 being very different from that in the former season ; during 



