680 General Index. 



Argillo-micaceous Slate, 



Argillaceous Oxide of Iron, - ,- 3 ^ 



Arsenical Pyrites 57 > iy 



Asbestus, ' 348 



inffr . ayWaCke '' 



white crystallized in Limestone, 

 t V &C - 310,398,435 



B. 



Baldwin, C. C. letter from - 



Beach Grass used for fixing- sands, 20 



Beaumont Elie de on grapgite and anthracite, ' 28 7 



Beartown Mountain *' deVati n f mountai ^ - 522, 539 



Belchertown Granite, 



Bennington iron mine, 



Bernardston iron mine, ' ?6 



Beryl, . - 54 



Bittr^r^^' <*** ' - 



Bituminous Limestone and Marlite, . . f 



Blue Hills, . 230, 348, 462, 507 



Bog Ore, its localities, 



petrefactions in 



Boston H 



row,-- ' 

 Buhrstone iA Washington, 



its origin, . _ , 



r* 



Calamites in new red sandstone, OQ o 



m graywacke, 



Calcareous Spar, - 2 5 



Cape Ann Sienite, . " 52 436 



scenery of " 15 



Cape Cod, scenery of . . ^ 



clay cliffs upon - " 35. 



Carbonate of Magnesia and Iron - " H 



of Copper * J 



CarnelionandCachobng, . ' 226 ' ^ 



Caverns and Fissures 

 in Berkshire/ 

 Cascade in Leverett 



CentralCl^o^ 1 "^-. 



Cha basic, . ' 516 



Chalcedony 436, 461 



Chatham Bea.h ^ upon ; he ' . W 371, 399, 4K 



Chelmsford Granite, 



lo 



Chiastolite 265 



Chlorite, 291 



* - f 5 4 3 



