Obituary. 367 



water, and the solution was filtered to separate the insoluble 

 residue ; Acetic Acid in excess was added to the filtered li- 

 quor ; by means of Ammonia, it proved to have retained no 

 Silica ; the solution was freed from Carbonic Acid by su- 

 persaturation with Acetic Acid and subsequent ebullition, 

 the excess of Acetic Acid was neutralized with Ammonia, 

 and the solution was treated with Muriate of Lime ; this oc- 

 casioned a white floculent precipitate, which, when heated 

 with concentrated Sulphuric Acid, disengaged vapours, hav- 

 ing the odour of Fluoric Acid, and they corroded glass with 

 energy; therefore this precipitate was Fluate of Lime. It 

 was out of my power to estimate the quantity of Fluoric 

 Acid contained in the mineral, owing to the small quantity I 

 had at my disposal, more especially as it was intimately inter- 

 mixed with blue Spinell and Fargasite. From the prece- 

 ding facts I do not doubt, if the mineral from Finland be 

 again examined, it will prove to be a Fluo-Silicate of Mag- 

 nesia, and that the two substances in question must, as such, 

 be hereafter ranked in our Mineralogical systems. 



I submit this letter for publication in the next number of 

 your interesting Journal. 



And am, very respectfully, 



Your obedient servant, 



H. SEYBERT. 



Art. XXIV.— Obituary. 

 PROFESSOR FISHER. 



Perhaps most of our readers are apprized of the fact, — 

 that Professoi Fisher was among the number of those, who 

 perished in the wreck of the Albion, on the morning of the 

 22d of April last. 



Soon after the news of the death of Professor Fisher was 

 confirmed, an Eulogy embracing the principal circumstan- 

 ces in his life and character, was delivered in the College 

 Chapel, by Professor Kingsley : and the parts of the fol- 

 lowing account which are marked by inverted commas, are 

 taken from that performance. 



