ARTESIAN WELLS. 



383 



WELL AT HOLYOKE. 



Artesian well of Parsons Paper Coiupany, at llolyoke; near west end 

 of dam; October, 188-4. E. W. Cliapin, superintendent. The samples in 

 this series were especially clean, and the method of boring favored the 

 production of large fragments. All the samples are very fine, and the 

 distinction di-awn between shale and sandstone is a very close one. The 

 specimens were carefully bottled and labeled with depth and date, and 

 given to the Amherst College cabinet Ijy Mr. Chapin. 



Record of artesian-well boring at Holyoke. 



Kiud of rock. 



Sand, etc. (not reported ) 



Surface of rock : a dark-gray shale, black when wet; much efferves- 

 cence with HCl; melts to light-yellow glass , 



Same black shale ; small drusy surfaces of calcite crystals, apparently 

 R^ with edges cut by — 2K and apex by — iR 



Fine sandstone, dark chocolate-brown, slightly calcareous, micaceous. 



Same sandstone, slightly redder and more flaky ; same calcite crusts as 

 102 



Same very fine, micaceous .sandstone, dark-gray ; some grains colorless ; 

 sandstone with biotite and muscovite scales 



Fine, light-gray, micaceous sandstone; abundant calcareous cement. .. 



Mixture of 132 and 150 ; calcite crusts 



Dark-gray shale ; calcareous, pyritous grains 



Fine-grained, chocolate, micaceous sandstone, a little coarser than any- 

 thing preceding ; calcareous 



Dark-gray, highly calcareous shale; silky, white, acicnlar efflorescence 

 on some grains 



Same as 164 



Same as 160 



Same as 190, but more calcareous ; like the finest-grained, thin-bedded 

 sandstones, which often show insect tracks , 



Same as 200 



Mixture of 215 and 230 



Bluish-black, slightly micaceous shale ; very calcareous 



Dark-gray, micaceous and pyritous shale 



Fine, black, calcareous shale , 



Same as 240 



Dark-gray, calcareous shale 



Dark-chocolate, shaly sandstone 



Mixture of 260 and gray, shaly sandstone 



Same as 270 



Mixture of dark- and light-gray shale ; many grains show efflorescence 

 of iron 



102 

 113 



130 

 132 

 140 

 150 



164 

 176 

 190 



200 

 215 

 223 

 230 

 235 

 240 

 244 

 255 

 260 

 270 

 280 



