Correspondence — Mr. C. E. Be Prance. 627 



in May of that year, when Mr. A. Timmins, Stud. Inst. C.E., kindly 

 showed me the series of specimens, at Euncorn. Mr. A. Timmins 

 had himself recognized the fact that the beds in question were lime- 

 stones, and had, in fact, made a rough analysis of them, which I 

 urged him to send to the Manchester Geological Society, with a note 

 from myself as to their geological identification, which I at once 

 recognized — having shortly before, through the courtesy of Mr. 

 Vivian, of the North England Eock Boring Company, examined the 

 fi.ne series of cores obtained at Clayton Vale, east of Manchester, 

 where the ArdwicTc Series was penetrated. In the fifth report of the 

 Underground Water Committee of the British Association, read at 

 Sheffield in August, 1879, and printed in the volume for that year, I 

 alluded to my identification, and in June, 1880, I published the 

 detailed section of the Winwick boring, drawn up from my notes of the 

 samples, in my paper published in the Manchester Geological Society's 

 Transactions, on " Further Notes on Triassic Borings near Warrington." 

 From which, perhaps, I may be permitted to quote the following 

 passages. "These Coal-measure deposits occurring at a depth of 

 only 340 feet or 113 yards from the surface, cannot be regarded as 

 a discovery of the highest commercial interest, for looking to the 

 westerly attenuation of thickness of the Coal-measures of South 

 Lancashire, to which I have already drawn the attention of the 

 Society, there can be little doubt but that the Manchester Coal-field 

 will occur at a less depth beneath the limestone than at Manchester, 

 in which case a valuable and workable Coal-field may be under the 

 London and North Western Eailway at Parkside, where a boring 

 has recently been carried out," .... and, " should the limestones 

 of Winwick belong to the same horizon as those of the Manchester 

 Coal-field, it is in the highest degree probable that another 600 feet, 

 and possibly much less, would reach the Openshaw Coal, or its 

 equivalents." 



H. M. Geol. Survey, Chas. De Eance, F.G.S., 



54, "West Parade, Ehtl. Assoc. Inst. C.E. 



MR. H. H. HOWORTH ON THE SUDDEN EXTINCTION OF THE 

 MAMMOTH. 



Sir, — As one of a numerous body of students of that most fasci- 

 nating science Geology, I venture to address you a few lines to ask 

 you to use your influence to induce writers, at least in your own 

 Magazine, to make use of their own language in their scientific 

 papers, and so to largely to increase the number of their readers. 

 In your September Number is a paper on a subject in which I — 

 and many other equally unlearned students of nature — take much 

 interest. From the cause above named, all who are not thoroughly 

 versed in both Latin and German are bound to take on trust evidence 

 that is quoted in support of the theory brought forward, which 

 evidence, had it been given in English, would have considerably 

 increased the interest in the paper of myself and many other of 

 your readers. Why should Englishmen, more than any other men, 

 err in this way ? We have a language much more expressive 



