AMERICAN 
JOURNAL OF SCIENCE AND ARTS. 
[SECOND SERIES.] 
1 
Arr. I.— Account of some Volusnde Springs in the Desert of the 
Colorado, in Southern California; by Joun L. LeConre, M. D. 
In October, 1850, being at Vallecitas, San Diego Co., California, 
it was my good fortune to make a vi isit, In company with Major 
Heintzelman and Mr. Matsell, to certain boiling springs; not simi- 
lar io any which have been noticed in our territory ; t 
only account yet given of them has appeared in a ne wrapeepery it 
seemed to me, that the rough notes taken while making the visit, 
might with slight changes be of interest to my scientific friends. 
Mysterious accounts had been given us of a ‘Volcan’ situated 
in the midst of a plain covered with salt, near the shore of a lake : 
and although most of the salt used by the inhabitants of the 
mountains east of Santa Isabel was brought from this lake, no 
very definite account either of the distance of the lake, or of the 
phenomena to be seen there, could be procured. It was only 
apparent that some awe-inspiring object had heretofore defended 
itself against the prying wars of man. 
Major 0 mmi and of the troops about to 
isit these 
Hei then ec 
be co at the Gila river, if avin de 
: — of unknown interest, kin ndly Sear me an peoninity of 
ning his. 
—H aving sec SE guides the interpreter from Santa Isabel, 
and the head chief of the ‘ Lleguina’ Indians ee near the Salt 
re oe of the moon 
