GEOLOGY AND MINERALOGY OF NEWBURY. 169 



were suspended sooner than I anticipated, judging from 

 the output of the leading mine, so that I do not know 

 whether this theory was or was not confirmed. It is to 

 be hoped that a part of the expectations then raised may 

 sometime be realized. 



The last formation to be noticed is the amygdaloid 

 lying in the basin of the River Parker and on Kent's 

 Island. This is a purplish-brown or chocolate color. It 

 is not of great extent and is of little importance. On one 

 side it passes into a breccia, and on the other into a chlo- 

 rite slate, and may be only a product of the felsite. 



I trust I have said enough to show that Newbury is rich 

 in geological and mineralogical interest, and to excite a 

 desire in some minds to explore still farther these fields and 

 hills. It was amateur exploration that revealed these 

 minerals of which I have been speaking. It is to the 

 amateur geologist that the professional student mainly 

 looks for hints. 



Where so many richly suggestive hints exist as in New- 

 bury, the amateur ought to feel encouraged to prosecute 

 his field-work ; not, let me say, in the hope of "striking 

 something rich," with which to form a stock company, 

 but to contribute new and important facts to science and 

 to enrich his own mind with the wealth of knowledge and 

 beauty that fills the earth. 



