Prof. Faraday's Magnetic Remarks. 253 



not given in their edition of Phillips, though probably identical 

 with the h\ of Allan's ' Phillips/ p. 47, where P : hi = 126°, and 

 M:T = 95° 20'. 



We have also obtained cleavages of about 95° 30' with highly 

 crystalline specimens of pectolite from Monte Baldo in the Tyrol, 

 aud the Castle Rock, Edinburgh. 



Pectolite, which as a characteristic species has not received as 

 much attention as it deserves, is rather an abundant mineral, 

 especially in Scotland, and is identical with the Wottastonite and 

 stellite of Thomson, with the stellite of Sheppard, and with the 

 osmelite of Breithaupt. 



Table of Analyses. 



XXXVIII. Magnetic Remarks. 

 By Professor Faraday, D.C.L., F.R.S. fyc. 



My dear Tyndall, 



IN relation to your letter of last month*, I write, not for the 

 purpose of giving what might be taken as an answer, but 

 to Hty that it seems to me expedient and proper to wait and allow 

 the thoughts that my papers may raise, to be considered and 

 judged of at their leisure by those who are inclined to review and 

 advance the subject. Perhaps, after a respectful interval, 1 may 

 * Phil. Mag. 1855, vol. ix. ]>. 205. 



