Intelligence and Miscellaneous Articles, 335 



of that country. Some of the specimens are of a large size, and 

 well adapted for a public institution. Also a collection of North 

 American fossils, containing about six hundred specimens, from 

 the transition, secondary and tertiary formations. Applications, 

 post paid, may be addressed to F. H., care of Mr. R. Taylor, Red 

 Lion-court, Fleet-street, London. 



LETTER FROM MR. WATKINS. 



To Richard Phillips, Esq., F.R.S., %c. 

 My dear Sir, 

 I am fully aware that the pages of your Journal are far too valu- 

 able to be occupied by silly and consequently useless controversy; 

 still I hope you will be able to favour me with a space, in your next 

 number, for the following brief remarks. 



In the last number of your Journal, page 23 1, I observe in the first 

 paragraph of a long letter from Mr. William Sturgeon, that he has 

 been pleased to indulge himself in using rather strong language 

 against some one. I have accordingly inquired of this gentleman 

 whether in that paragraph he alluded to me, and he has very politely 

 answered me " Yes". 



It therefore only remains for me in reply to his attack simply to 

 repeat, what I have before stated, in a letter in your Journal, page 

 238, March number, that the phenomena which Mr. Sturgeon re- 

 corded as new in November 1834, were known and exhibited to some 

 of the first philosophers of this country many months previously ; and 

 if Mr. Sturgeon doubt my assertion, I refer him without hesitation to 

 any of the gentlemen mentioned in my letter above alluded to. 



I remain, My dear Sir, 

 5 Charing Cross, Yours faithfully, 



Sept. 10th, 1835. Francis Watkins. 



ANALYSIS OF WOLFRAM. 



In 1796 Vauquelin analysed wolfram, and in 1815 it was repeated 

 by Berzelius; the results were : 



Vauquelin. Berzelius. 



Tungstic acid G7'00 74666 



Protoxide of manganese . 6*25 5*640 



Protoxide of iron 1800 17954 



Silica 150 2-100 



927 100-360 



Mr. Thomas Richardson has lately again analysed this mineral, and 

 finds its composition to be : 



Tungstic acid 73'60 



Protoxide of iron 11 20 



Protoxide of manganese . . 1575 

 100-55 

 The difference between this and the former analysis would lead to 

 the opinion that they were different species. — Thomson's Records 

 of Science, vol. i. p. 452. 



