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excess in the leech being only 1; while in a hive of bees it is 26. 

 These circumstances induced the author to inquire whether any parts 

 of animals possessed of an unusual temperature were devoid of nerves : 

 the heat of the deer's horn while inclosed in its velvet, was found in 

 the month of June, when only one foot long, to be 96, and in July 

 the top of the antler was 99 ; the power therefore of generating heat 

 was here so evident, independent of any direct influence of the brain 

 or heart, that it was only necessary to ascertain whether nerves ac- 

 companied the blood-vessels, and they were found to do so very nu- 

 merously. To ascertain how far animal heat was under the control 

 of the ganglionic nerves, the trunks supplying the velvet of one horn 

 of the deer were divided, while those of the other were left entire ; 

 and the result was, that on the first day the temperature fell 12 

 short of that of the latter ; on the second day 26 ; on the third day 

 17 ; on the fourth day 8 ; and on the fifth 2. Forty-eight hours 

 after the division of the nerves, the temperature of the horn fell to 

 within 3 of that of the atmosphere, but the animal having bruised 

 the horn, the diary was discontinued on the sixth day, and it was 

 then hotter than that of which the nerves were entire ; and although) 

 the nervous trunk had not reunited, it was evident that some other 

 connection had been formed between the nerves of the horn and head. 

 The author next adverts to the abundant connexion of the placenta! 

 nerves with ganglia, as described by Mr. Hawkins on a former oc- 

 casion. This led him to suspect that the uterus might under particular 

 circumstances of excited action, possess peculiar powers of generating 

 heat; and he was informed upon inquiry of practitioners in midwifery, 

 that they sometimes found in turning children, the heat almost as 

 great as the hand could endure. Sir Everard then details the results 

 of some experiments in relation to this subject, which were furnished 

 by Dr. Granville, showing that in certain cases of difficult labour, 

 the temperature of the uterus rises as high during the violence of the 

 pains as 120; and to prove that mere muscular action is not the 

 cause of this production of heat, he observes that the temperature 

 of the heart of a dog in full action is only 101, and that in certain 

 cases of apoplexy the body becomes alternately hot and cold, the 

 pulse undergoing no variation in its frequency. 



Sir Everard concludes this communication with some remarks upon 

 the relation between the proportion of ganglionic nerves and that of 

 temperature above the surrounding medium in certain fishes, and ob- 

 serves that they always appear to bear a direct proportion to each 

 other. He also notices the enormous supply of nerves sent to the 

 electric organs in the Gymnotus and the Torpedo, which, however, 

 are productive of no remarkable increase of temperature, being en- 

 tirely free from, and unconnected with, any ganglionic arrangement. 

 He also suggests the probability of the ganglionic nerves being those 

 which are principally affected in all diseases attended by a consider- 

 able elevation of heat beyond the natural standard. 



