224 ORIGIN OF MINERAL SPRINGS. 



Trenton Falls, N. Y., called the Trenton limestone. The most 

 common fragment found is the corner of the shield with its thorn- 

 like appendage, (see the figiu-e, Plate VI.) For the information 

 of geologists, I would obsen-^e, that fig. 2 was found just be- 

 low the sti-atum most abundant in the genera Delthjjris, Turritella, 

 and Trochus, and that Mr. Carley's specimen occm-red in the 

 region of the Isolelus gigas, and the Cryptolithus tesselatus. 



On the Origin of Mineral Springs. By Lardner 

 Vanuxem, of Bristol, Pa. 



At the last meeting of the Association, a paper " On the Sul- 

 phur Springs of New York" was read, by Dr. Lewis C. Beck; 

 and having dissented from the opinion advanced by the writer as 

 to their origin or som'ce, I proposed to present my views at the 

 next meeting of the Association. 



There was no discordance of opinion as to the facts set forth 

 in the paper, but dissent merely, from the conclusion drawn from 

 the facts, attributing to the springs a volcanic source or origin. 



At that meeting it was not the intention of the dissenter to con- 

 fine himself to sulphur springs, because the proof of a more local 

 origin than a central source might not be so conclusive" to others, 

 if treated singly, but to include those of other kinds that were in 

 the same category, so that their united weights would insm-e a 

 decided preponderancy. 



Furthermore, aware of the importance of Mineral Springs to 

 explain the origin of the contents of all veins, &cc., that were fis- 

 sures, cracks, &c., it was the intention also of the dissenter to di- 

 rect attention to them, as the vehicle of the product of veins, and 

 if not successful at the time, it might open the way, probably, for 

 a future effort which would be final, eillier positively or nega- 

 tively. 



