478 Nezv York State Museum 



Porphyritic granite, 70 

 Porphyritic rocks, 66 

 Porphyritic structure, 71 

 Port Ewen beds, 378 

 Port Jervis limestone, 381 

 Portage beds, 397, 402 

 Portuguese Man-of-War, 86, 174 

 Potash, 69 



Potsdam sandstone, 237 

 Poughquag quartzite, 233 

 Prattsburg sandstone, 403 

 Prawns, 110 



common, 163, 170 

 Precambrian eras, 195-96 



literature, 210 

 Primary dip, 41 



Prosser, C. S., cited, 353, 418, 451, 452 

 Prosser, C. S. & Cummings, E. R., cited, 300, 452 

 Prosser, C. S. & Rowe, R. B., cited, 452 

 Proterozoic era, 199-202 

 Proterozoic rocks, 203 

 Pteropod oozes, 84 



Pteropods, 20, 379, 386, 390, 397, 405 

 Pudding-stone, 31 

 Pulaski shales, 290 

 Purples, 103, 112 



rock, 86 

 Purpuras, 128 

 Pyroxenes, 69 



Quahaug, 154, 167, 168 

 Quartz, 29, 68, 69 

 Quartz conglomerates, 31 

 Quartz diorite, 70 

 Quartz-sand conglomerates, 32 

 Quartzite, 23, 34, 74, 204, 208 

 Quaternary time, 439 

 Queenston shales, 318 



Radiolarian oozes, 84 

 Radiolarians, 82 



