142 Mr. Levy on a new Mineral. [Fe*. 



marked i are the result of an intermediary decrement, the sign 

 of which is (5', 6 ig^)- 



m,m = 100° 0' 



m,e3 = 134 



m,e' = 120 4 



m,e = 124 45 



m,ei = 121 58 



vi,e^ = 124 31 



m,b'' =.126 



p,m = 90 



p, cs = 132 38 



;>, e' = 128 48 



p,e = 141 41 



p,el = 143 2 



p,e^ =118 12 



r 



p,h^ = 144 



p,a' = 150 56 



i?, a= = 164 2S 



p,i = 147 30 



es,e3 = 135 46 



e ,e = 150 • 



9 9 

 T T 



€«, ea = 154 21 



6^, cs = 162 68 



3. 



g,,c' = 156 29 



«3, ?: = 156 



63,63 = 101 37 



e ,e = 109 21 



9 9. 



cl, gt = 112 3 



i,i = 149 35 



This substance I propose to call Brookite, in honour of Mr. 

 Broke. 



We hope to give the characters of this mineral before the 

 blowpipe, and its chemical analysis, in our next. — C. and P. 



