636 



REPORT ON NATIONAL MUSEUM, 1886. 



Page. 



Bituminous, definition of 521 



limestone, description of 372 



rocks 307 



Black marble.Italy 481 



Bluestone, definitions of 521 



quarrying of 454 



Bottom joints in rocks 310 



Bougard marble from Germany 479 



Brard's process of ascertaining the poros- 



ityof stone 334 



Brazil, specimen of biotite gneiss from 016 



specimens of marble from .... 616 



Breast of qnarry , definition of 521 



Breccia marble, Italy 481 



occurrence of 378 



Breccias, characters of 444 



definition of 521 



Brick, specific gravity of 334 



British Provinces of North America, gran- 

 ites 485 



sandstones 486 



specimens of building stone from 609 



Brocatelle marble occurring in southern 



Prance 479 



Bryant, Gridley 286 



Building stone, selection of 345 



Building stones in Museum, chief sources of. 277 



"weathering of 331 



Bush-hammered finish 319 



Bush -hammer used in stone working 329 



Butt, definition of 521 



C. 



Caen stone quarries in Normandy.." 479 



Calcareous, definition of 521 



rocks 307 



sandstones 445 



Calcite, characters of 297 



Calcium sulphate, characters of 298 



Calc sinter, characters of 372 



Calc-spar, characters of 297 



California, granites in 411 



specimen of hornblende granite (?) from. 527 



liparitein 430 



marbles in 375 



sandstones in 446 



serpentine in 362 



specimens of andesite tuff from 528 



specimens of biotite granite from 527 



specimen of diorite from 528 



specimens of hornblende biotite granite 



from 527 



specimen of marble from 527 



specimen of steatite (soapstone) from.. 527 



specimens of basalt from 527 



specimens of hornblende granite from. . 527 



specimens of limestone from 527 



specimens of magnesian limestone from . 527 



specimens of sandstone from 528 



specimens of travertine (marble) from.. 527 



Canada, slates from 488 



specimen of limestone from 609 



specimen of sandstone from 609, 610 



specimen of slate from 609 



specimens of biotite granite from 610 



Page. 

 Canada, specimens of hornblende granite 



from 610 



Cape Ann Granite Company 287 



Carbonaceous rocks 307 



Carrara marble, disintegration of 313 



Catalogue of building and ornamental stones 



in National Museum 526 



Catlinite, characters of 471 



colors of 471 



occurrence of 472 



Cavernous, definition of 521 



Cellular, definition of 521 



Chalk, composition of 373 



Chamberlain, Prof. T. C, on granite and 



gneiss in "Wisconsin 426 



Channeling machines 321 



Chelmsford granite 286 



Chemical action of the atmosphere on build- 

 ing stones 337 



agencies affecting building stones 336 



characters of rocks 307 



composition of rocks 297 



composition of aragonite 298 



composition of dolomite 298 



composition of epidote 299 



composition of garnet 299 



composition of granite 408 



composition of gypsum 208 



composition of hematite 301 



composition of iron pyrites 300 



composition of liparite 429 



composition of magnetite 301 



composition of olivine 299 



composition of quartz 294 



composition of serpentine 298 



composition of stones, tables showing 



the 502 



composition of talc 298 



China, specimen of granite from 631 



specimen of rhyolite from 631 



specimens of tuff from 631 



Chisel used in stone- working 330 



Chlorite, characters of 299 



granite 408 



Circular saws, use of 327 



Classification of rocks 308 



Clastic, definition of 522 



Clayholes, definition of 521 



Colorado, granite in 412 



limestones and dolomites in 392 



liparite in 430 



marbles in 376 



sandstones in 446 



specimen of diorite from 528 



specimen of muscovite gneiss from 528 



specimen of quartzite from 529 



specimens of biotite granite from 528 



specimens of limestone from 528 



specimens o£ rhyolite tuff from 529 



specimens of sandstone from 528, 529 



Colorof calcite 297 



of pyroxenes 297 



of stones 306 



of micas 296 



Colored marbles 385 



' 1 



