ARTESIAN WELLS. 

 Record of artesian-well boring at Holyoke — Continued. 



385 



Kind of rock. 



Dark-brown sandstone 460 



Same, granitic ... 480 



Ferruginous marl ; 490 



Dark-brown sandstone 500 



Same, coarse gneiss grains 530 



Black, shaly sandstone 565 



Dark-gray, shaly sandstone 570 



Brown sandstone 590 



Dark brown-gray, marly sandstone 615 



Brown sandstone 645 



Coarse, rusty, granitic sandstone 685 



WELL AT NORTHAMPTON. 



Northampton, at Belding's silk mill, south of the raih-oad station. Com- 

 menced in 1885. Depth, 3,700 feet; month of well, 125 feet above sea 

 level. In New Red sandstone. Samples furnished bv the borers of the 

 well and deposited in the Amherst College collection. 



Record of artesian- well boring at Xorthampton. 

 [Abbreviations: q, qnartz; f, feldspar; m, mnscovite; b, biotite; g, garnet.] 



Kind of rock. 



Average ' 

 grain, in i 

 [oUUmeters. 



Sand 



Clay 



Eed sand (probably till) 



Red sandstone, borings 



Coarse, buff sand, white to amethystine qnartz, flesh 



colored feldspar grain 



Similar, but finer and more rounded grains 



Same 



Same ; few scales mnscovite and hornblende 



Same 



Same ; many grains deep red-brown from rust covering. 



which has been usually worn off by the attrition of the j 



drUl 



Very fine, butf sand, quartz, orthoclase, and abundant 



mnscovite scales 



Like 730 



Same 



Bnff sands, qnartz, feldspar, little mnscovite . 



-25 



1* 



i 



itoli 



itoU 



^toli 



itoli 





 140 

 150 

 535 



682 

 692 

 710 

 730 

 750 



910 

 930 

 950 

 970 



