24G Mr W. J. Henwood on the Temperature 



having brought to a close that most formidable portion of it 

 which related to the immense family of the Compositae, and on 

 the assistance he should derive in the subsequent parts from 

 the monographs alread}' drawn up of several of the more im- 

 portant natural families Avhicli would come before him, as 

 from that of the Labiata) by Mr Bentham. 



His death, which took place in September of the following 

 year, has indeed frustrated these hopes and aspirations ; but 

 the public may doubtless look to the completion of this most 

 useful undertaking under the auspices of the same Name which 

 figures at its commencement ; as his son, who has succeeded 

 him in his professorship at Geneva, and who is already distin- 

 guished by his Memoir on tlie Campanulacea^, and by other 

 writings, will, I trust, bring to a successful termination a work 

 in which the reputation of his illustrious parent is so deeply 

 involved. 



This, however, is a point, upon which it does not become 

 one who, like myself, have, since the year 1830. known Mon- 

 sieur Decandolle only through his writings, to aifect to speak 

 with authority ; and, for the same reason, I shall forbear to 

 dwell upon his private worth, or on his public services, as 

 member of the Legislative Body, and as Rector of the Aca- 

 demy of Geneva, confident that justice will be hereafter 

 done to these his deserts, by persons who had more opportu- 

 nities fully to appreciate such points in his character. 



Observations on Subterranean Temperature in the Mines of 

 Cornwall and Devon. By W. J. Henwood, C.E., F.R.S., 

 F.G.S., &c. &c. &c.* 



My geological survey of the mines in the Duchy of Corn- 

 wall afforded many opportunities for observations on subter- 

 ranean temperature, of which I always availed myself. 



After most careful consideration of the subject, and consul- 



* From the Transactions of the Royal Grological Socioty of Cornwall, 

 vol, v., at present in the press. 



I 



