358 Mr. Kenwood's Notice of a Geological Survey 



the work of an all-wise, all-powerful Deity, can only be hoped 

 for from a cautious process of inductive and analogical rea- 

 soning." And yet this stuff is put within commas, as if 1 had 

 written it. Allow me to say also, in reply to the editorial note 

 affixed to this singular quotation, that I have nowhere desig- 

 nated " any attempt to unravel" the Plan of the Creation, as 

 the Natural System. 



By the way of conclusion, I may remark that your Corre- 

 spondent is happily not in any way obliged to trouble his 

 brains with the " i-eptdsive and insci-utable" innovations of 

 *' revolutionary Zoologists." And therefore advising and hoping ' 

 that in future he will stick close to " the familiar and popular 

 'Entomology'^ which amused him " in those happy days long 

 gone b\'," I remain, my dear Sir, yours &c. 



W. S. MacLeay. 



XLVI. Notice of a Geological Survey of the Mines of Corn- 

 wall; isoith a Programme of an intended Arrangement of the 

 leading Details of the Metalliferous Veins, Sfc, By W. Jory 

 Henwood, F.G.S. 



To Richard Taylor, Esq. Sj-c. S^c. 

 Dear Sir, 



IN the year 1829, at the desire of R. W. Fox, Esq. of Fal- 

 mouth, and C. Fox, Esq. of this place, who also defrayed 

 the expenses incidental thereon, I made an examination of the 

 leading geological features of several of the mines in Corn- 

 wall; and a short residence in the neighbourhood of Tavi- 

 stock, in the summer of 1830, afforded me an opportunity 

 of extending my investigations to some of the mines there. 

 The results of these inquiries were communicated to the Royal 

 Geological Society of Cornwall, in October last, and were to 

 have been honoured with a place in the forth-coming fourth 

 volume of their Transactions. 



But in consequence of the liberal aid and encouragement 

 of most of the noblemen and gentlemen resident in, and con- 

 nected with, this county, as well as of several distinguished sci- 

 entific men elsewhere, I have commenced a survey of all the 

 mines in Cornwall ; and I have now examined all those west 

 of Redruth. Besides noticing the geological relations of the 

 veins, ("lodes", "cross courses," " flucans," " slides," and 

 " el van courses",) and of the rocks they traverse, I ascertain 

 the temperature of every stream I find running or jetting out 

 of the unbroken rock, and make expei'iments on the electro- 

 magnetic properties of the veins*. 



After having gone tiirough all the mines, I shall endeavour 

 to arrange and classify my observations ; and the Council of 



» Fox, Phil. Trans. 1830, part li. 



the 



