310 Inielligerice and Miscellaneous Articles. 



Children) to the Royal Society, " On destroying the fire-damp in 

 mines by chloride of Jime, by F. Fincham, Esq." 



It is a somewhat remarkable coincidence that I had recommended 

 the use of chlorine for the same purpose in January last; and al- 

 though I have some doubt as to its practicability, I am now pur- 

 suing a series of experiments in a colliery at West Bromvvich, in 

 the hope of removing the objections against the use of chlorine, 

 which have liitherto prevented its adoption. 



If my experiments prove successful, 1 will take an early oppor- 

 tunity of forwarding you an account of them. 



I am, &'C. John Woolrich. 



MINERAL WATERS OF BILIN. 



The following are the contents of these springs, according to 



Professor Steinmann : Joseph's- JVell. Caroline's- Well. 



In 10,000 parts. 



Sulphate of lime 2462 2-127 



Dittoofsoda 7-212 6-943 



Muriate of soda 3-811 3303 



Carbonate of soda 31-182 23-411 



Ditto of lithia 0114 0105 



Ditto of strontia 0*018 0-018 



Ditto of lime 3-058 3-801 



Ditto of magnesia 2-573 2-010 



Ditto of protoxide of iron 064^ 



Ditto of protoxide of manganese. , . . 0-015f ^ ^^i 



Subphosphate of alumina 0-019^ 



Phosphate of lime 007 ) 



Silica 0-505 0-549 



Solid contents 51040 42-338 



Carbonic acid gas 23-620 22-317 



Atmospheric air 0-153 0-108 



74-813 64-763 

 Schxueigger s Jahrbuch der Chemie,S)'C. N.R. Bandxv'm. p. 184. 



ANALYSIS OF ALLOPHANE. 



Dr. Walchner has recently analysed this mineral, from Gersbach, 

 in Schwarzwalde, having a specific gravity of 1-8, with the following 

 results : 



Silica 24-109 



Alumina 38-763 



Oxide of copper 2-328 



Water 35-754 



100-954 

 Jb. Batidxix.p. 154. 



