!^84 M. Chevreul's Chemical Examination of tivo [April, 



with experiment; but for men of inferior capacities and no 

 education, who, in the fulfihnent of even plain directions in the 

 hour of danger and hurry, are often hkely to misunderstand 

 their meaning, and defeat their intention. 



Takino- therefore these circumstances into consideration, it is 

 my opinfon that the invention is amply equal to the purposes 

 for which it is intended, and highly deserving the confidence 

 and encouragement of a liberal public. 



Roberts has received from the Manchester Assurance Com- 

 pany a premium of 50 guineas, and their permission to use any 

 documents respecting the invention which have been laid before 

 the Board of Directors ; and I should feel myself at all times 

 complimented by any application for further information, or 

 indeed by any suggestion likely to forward the poor fellow's 

 interest, or to make the invention more generally known and 

 useful. I have the honour to be, Gentlemen, 



Your very obedient servant, 



W. R. Whatton, 

 Surgeon to the Manchester Fire and Life 

 Assurance Company. 



Mif^ht not talc be advantageously substituted for glass for the 

 sight-holes, as the danger of the latter substance's breaking ft-om 

 sudden exposure to intense heat would thereby be avoided ?-rr 

 Edit. 



Article VI. 



Chemical Examination of two Specimens of the Soil of the Cavern 



of Kdhloch. By M. Chevreul. (Communicated by the Rev. 



W. Buckland, 'Professor of Mineralogy in the University 



of Oxford, &.C.) To ivhich is prefixed an Account oj the Cave, 



from the Reliqnm Diluviancc. 



" The cave of KUhloch is more remarkable than the rest, 

 as being the only one I have ever seen, except that of 

 Kirkdale, in whicli the animal remains have escaped disturbance 

 by diluvial action ; and the only one also in which I could find 

 the black animal earth, said by other writers to occur so gene- 

 rally, and for which many of them appear to have mistaken the 

 diluvial sediment in which the bones are so universally imbed- 

 ded. The only thing a.t all like it that I could find in any of the 

 other caverns, were fragments of highly decayed bone, which 

 occurred in the loose part of the diluvial sediment in the caves 

 of Scharzfeld and Gailenreuth ; but in the cave of Kuhloch, it 

 is far otherwise. It is hterally true that in this single cavern 

 (the size and proportions of which are nearly equal to those of 



