No, 7.] NATURAL HISTORY SOCIETY. 439 



to 5-21. In a single trial, NaO 4-35, and KO M09, MgO 

 0-468 were obtained. The powder is very feebly acted upon by 

 the strong acids. 



From the foregoing it would appear that the mineral differs 

 chemically from normal scrvpolite, and especially from the vit- 

 reous couseranite of Saleix (Pyrenees) analyzed by Pisani ; 

 though it must be kept in mind that the example analyzed by 

 him, had been so much altered as to have its hardness reduced 

 to 3. I am therefore led to regard the Galway crystals as the 

 original, unaltered mineral, from which couseranite and dipyre 

 have originated through hydration,"}" in the same manner as 

 scapolite has given rise to wilsonite, huntite, algerite and terenite. 

 Should it prove a new species, I propose to call it Ontariolite. 



PROCEEDINGS NATURAL HISTORY SOCIETY OF 



MONTREAL. 



The first regular meeting for the session 1880-81 was held 

 in the Society's Rooms on the evening of Monday October 25th. 

 Principal Dawson occupied the chair. Thomas Branierd, Esq. 

 of the Hamilton Powder Co. was nominated for election as an 

 ordiuary member. Henry Montgomery Esq, Toronto and Rev. 

 Charles Rogers, LL.D,, London, Eng., were nominated for cor- 

 responding members. 



The deputation to the American Association for the Advance- 

 ment of Science, reported that they had attended the meeting of 

 this body in Boston, in August last, and presented the invitation 

 of this Society together with the resolutions of the Corporation 

 of McGill University, the Council of Arts and Manufactures and 

 the Medico Chirurgical Society ; that the invitation was favor- 

 ably received by the nominating committee and the general meet- 

 ing, and that the two resolutions were introduced by the committee 

 and unanimously and most cordially passed by the Association — 

 the first resolution expressing thanks for the invitation, and the 

 second recommending it to the favorable consideration of the next 

 meeting's committee. This was as far as the Association could 

 proceed in accordance with its constitution, which does not per- 



f Possibly chiastolite may have been similarly produced, though 

 the origin must have been attended with a more radical metam- 

 orphism. 



