43 Mr. Moyle on the Temperature of Mines. [Jan. 



covered at Oreston, near Plymouth ; and that these are referable 

 to antediluvian races, appears to be proved by the unequivocal 

 circumstances attending analogous remains in the Kirkdale cave 

 in Yorkshire. If this be admitted, it will require the stricter 

 caution in distinguishing between diluvian and post-diluvian 

 deposits The satisfactory solution of the general problem, as 

 far as it relates to man, is probably to be sought more particu- 

 larly in Asiatic regions, the cradle of the human race. Whether 

 fossil remains of the recent elephant, rhinoceros, hippopotamus, 

 and hyama, are to be found in the diluvium of tropical climates, 

 becomes also an interesting branch of the inquiry, since it has 

 been conceived that the fossil species of those races distributed 

 throughout the greater part of the temperate and frigid zones of 

 the northern hemisphere, being different, were by nature adapted 

 to those regions, and perished where they lived. In the mean 

 time, in a district so highly interesting as the neighbourhood of 

 Kbstritz, it cannot be too strongly recommended to naturalists 

 to continue to explore, and scrutinize with all that precision 

 which the subject obviously demands, all the natural circum- 

 stances under which the various deposits of animal remains are 

 to be found in the fissures and cavities both of the gypsum and 

 limestone, as well as in the general tract of sandy loamy soil 

 diffused over the surface of that country. In investigating such 

 a question, a comparative view of the levels of the country, in 

 relation to those deposits, would form an instructive part of the 

 inquiry. 



Article III. 



On the Temperature of Mines. By M. P. Moyle, Esq. 



(To the Editor of the Annals of Philosophy.) 



DEAR SIR, Hehton, Dec. 8, 1S22. 



The difference of opinion evinced by Mr. Fox and myself, 

 relative to the augmented temperature of the earth in the descen 

 from its surface, seems to have drawn considerable attention ; 

 and as strong arguments are brought in support of decidedly 

 opposite theories, I consider it but just that the public should 

 be in possession of all the facts, sentiments, and experiments, 

 to ground theirs. It, therefore, will become necessary to make 

 a few remarks on what has been advanced by Mr. Fox and Dr. 

 Forbes, in the Transactions of the Cornwall Geological Society, 

 as well as that published by the former in the Annals of Philo- 

 sophy. 



Some few of my earliest experiments you have done me the 

 favour of publishing in the Annals for April and June last. 

 These experiments, together with others, formed the substance 



