C42 



REPORT ON NATIONAL MUSEUM, 1880. 



Page. 

 Mexico, specimens of hyperstheno andosito 



from G14 



specimens of limestone [marble] froni.GlO, Gil 



specimens of pumice from 615 



specimens of rhyolite from G13, 014 



specimens of rhyolito tuff from 613 



specimens of sandstone from 615 



specimens of travertine [Mexican onyx] 



from 611 



specimens of tuff from 611, 612 



Mica andesito, characters of 440 



Micas, characters of tlio 295 



Michigan, limestones and dolomites in 400 



sandstones in 450 



slates in 467 



specimens of biotite gneiss from 556 



specimen of granite from 556 



specimen of quartz ito from 556 



specimens of limestone from. 553, 550 



specimens of sandstone from 556 



specimens of slate from 556 



Microscopic structures of rocks 302 



Middlesex Quarry Company 290 



Minerals occurring in building and orna- 

 mental stones . 292 



occurring in schists 441 



Minnesota, granites in 421 



limestones and dolomites in 400 



porphyry in 428 



sandstones in 451 



slates in 467 



specimen of calcareous dolomite from . 557 



specimens of gabbro from 558 



specimen of massive labradorito from . . 558 



specimen of olivino diabase from 558 



specimen of quartzite from 558 



specimen of slato from 558 



specimens of diabase from 557,558 



specimens of dolomite from 556 



specimens of granite from 557 



specimens of hornblende granite from . 557 

 specimens of hornblende mica granite 



from 557 



specimens of limestono from 557 



specimens of magnesian limestono from 557 



specimens of quartz porphyry from ... 557 



specimens of sandstone from 558 



specimens of siliceous dolomite from ... 557 

 specimens of siliceous magnesian lime- 

 stone from 557 



Mississippi, sandstones in 452 



specimen of argillaceous sandstone from 558 



specimen of 1 im estone from 558 



specimens of sandstono from 558 



Missouri, granites in 422 



limestones and dolomites in 402 



marbles in 379 



porphyry in 428 



sandstones in 452 



specimen of ferruginous limestono from 561 



specimen of lithographic limestone from 561 



specimen of olivine diabase from 561 



specimen of quartzite from 562 



specimens of argillaceous limestone 



from 561 



Pago. 



Missouri, specimens of biotite granite from . 501 



specimens of calcareous sandstono from 561 



specimens of dolomite from 5C0 



specimens of hornblende granite from . . 561 



specimens of limestone from 558, 559, 500 



specimens of magnesian limestono from 561 

 specimens of magnesian limestono 



[marble] from 5:8 



specimous of sandstono from 562 



specimens of siliceous dolomite from. .560, 501 



Modulus of elasticity 492 



Montana, granites in 422 



marbles in 3S0 



sandstones in 452 



specimens of marble from 562 



specimens of hornblende mica granite 



from 562 



Mount AValdo, granite quarries in... 415 



Muscovite biotite granite 408 



structure of 303 



Muscovite granite 408 



X. 



Nebraska, limestones and dolomites in 402 



specimens of argillaceous limestone 



from 562 



specimens of limestone from 562,563 



Nero antico di Prato occurring in Italy 474 



Nevada, liparite in 430 



sandstono in 453 



specimens of quartz porphyry from 563 



specimens of hornblende andesito from 563 



specimen of sandstone from 503 



Nevadites or granitic liparites 429 



New Brunswick, red hornblendic granite in 485 



sandstones 486 



New England, early marble quarrying 288 



New Hampshire, granites in 422 



porphyry in 428 



slatesin 408 



soap-stone in 358 



specimen of biotite gneiss from 505 



specimen of steatite [soap-stone] from.. 563 

 specimens of biotite epidote gneiss 



from 505 



specimens of biotite granite from 564, 505 



specimens of biotite muscovite granite 



from 563,564 



specimens of muscovite biotite gneiss 



from 565 



specimens of porphyry conglomerate 



from '. 505 



New Ilavcn marble 3G3 



New Jersey, diabase in 435 



granites in 423 



sandstones in 453 



serpentine in 306 



slatesin 468 



specimen of biotite gneiss from 565 



specimen of dolomite from 565 



specimen of hornblcndo granite (?) from 565 



specimen of limestono [marble] from ... 565 



specimen of serpentine [ophiolite] from 565 



specimen of slate from 567 



