TRAP AS ROAD MATERIAL. 501 



fi-om Nortliauipton or Greenfield. This work is on the main Deerfield 

 trap sheet. The New England Trap Rock Company, of Westfield, has 

 opened another large quarry on the west line of West Springfield, on the 

 Holyoke-Westfield road, with a spur track to the railroad which connects 

 these towns. It has two large crushers witli a capacity of 700 tons per 

 diem, and can deliver the rock on the cars at (55 to 75 cents per ton. A 

 crusher has also been set up at the west foot of Mount Tom, in Easthamp- 

 ton, which supplies this town with road material. It is directlv under the 

 most picturesque portion of the palisaded bluff, and although it is at present 

 working in the trap talus, later the operations may seriously mar the north 

 wall of the mountain. The great dike beside the spur track of the quan-ies 

 of W. N. Flynt & Co., in Monson, has been opened by that companv, and 

 will sujjply material of the very best quality. 



The city of Northamjjton has for several years established its crushing 

 works near the north line of the town and at a distance from railroads, and 

 works the Hatfield tonalite or hornblendic granite, which is a partly decom- 

 posed rock, more brittle than the trap, and in many ways an inferior r(ick 

 for road ballast. The city has access beside the road or railroad within its 

 own limits to several better ledges than the one it works now. In 1897 the 

 city of Ware opened a quarry on the Coys Hill dike on the mountain side 

 east of the railroad station. The dike is here 5 rods wide, favorably situated 

 for quaiTying, and will furnish the best material in inexhaustible quantity. 



The other localities where the rock occurs in good quantity and quality 

 and convenient of access to the railroad are : Where the Fitchl)urg Railroad 

 crosses the Deerfield trap sheet, on the north side of the Deerfield River 

 and directly opposite to the present works; along- the Connecticut River 

 Railroad below Mount Tom station, especially at the first crossing, and at 

 Delaney's quany on the north line of Holyoke; at Tatham Cutting, in West 

 Springfield ; and finally, all the later volcanic cores marked on the map, and 

 especially the dikes of the trap marked in the crystalline rocks on the east 

 of the Triassic area, furnish a rock more fresh and firm than the trap of the 

 main sheet. 



West of the Triassic no beds of trap ai-e found and the hornblende- 

 schist of Chester or the Becket gneiss will be the best suljstitute for 

 local use. 



