Account of a Volcano in the Himalayah Mountains. 209 



of yielding fine sounds, if the animal which possesses it had a 

 more complicated respiratory system. 



The facts on which we have founded the explanation of 

 the Human Voice, may be equally employed to give an account 

 of the sounds which different species of mammiferous animals 

 may emit, whose organ is analogous to that of man. With 

 respect to those which, like the Alouates, have osseous pouches 

 communicating with the ventricles of the larynx, it is very easy 

 to conceive, from the researches which we have already pub- 

 lished relative to the vibrations of air, how it may happen 

 that the masses of air inclosed in these eavities, may give 

 sounds so grave, and, at the same time, so intense. When 

 these pouches are membranous, as in most species of apes, it 

 is equally easy to understand, from what we have said of mem- 

 branous tubes, that animals which possess these organs, ought 

 to be able to emit sounds very dull, and, at the same time, 

 very grave. 



As this subject requires to be treated in detail, I have 

 merely mentioned these applications, and I shall only farther 

 remark, that the most singular dispositions of the organs of 

 voice in different animals, appear to be explicable upon the 

 principles laid down in this memoir. 



Abt. III. — Account of a Volcano in the Himalayah Moun- 

 tains. Communicated to Dr Brewster by a Correspond- 

 ent in India. 



I now send you an interesting account of the volcanic ap- 

 pearance in the Purneah District, that you may have seen 

 alluded to in the Newspapers. The mountain is one of the 

 highest in the whole range, and is visible occasionally from 

 the eastern side of the Burhampooter, south of the Garrow 

 hills, and also, I believe, from Bhougilpore, but too indistinct- 

 ly to admit of our seeing the column of smoke observed by 

 Mr Barnes. Several years .ago, when examining this peak 

 from Dconhutta, with a good telescope, I observed a singular- 

 looking fissure in the side of it so remarkable, that I took a 

 sketch of it at the time. I think it is highly probable that 



VOL. IV. NO. II. APRIL 1826. O 



