﻿F. 
  E. 
  Wright 
  — 
  Methods 
  in 
  Jficroscqpical 
  Petrography. 
  519 
  

  

  Table 
  II. 
  — 
  Continued. 
  

  

  n 
  

  

  1/w 
  2 
  

  

  n 
  

  

  1/n 
  2 
  

  

  n 
  

  

  1/n 
  2 
  

  

  1-520 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0-432 
  825 
  

   •432 
  257 
  

   •431 
  689 
  

   •431 
  122 
  

   •430 
  556 
  

  

  1560 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-410 
  914 
  

   •410 
  388 
  

   •409 
  862 
  

   •409 
  338 
  

   •408 
  815 
  

  

  1-600 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-390 
  625 
  

   •390 
  137 
  

   •389 
  650 
  

   •389 
  164 
  

   •388 
  679 
  

  

  1*525 
  

  

  6 
  

   7 
  

   8 
  

   9 
  

  

  0-429 
  992 
  

   •429 
  429 
  

  

  •428 
  866 
  

   •428 
  305 
  

   •427 
  745 
  

  

  1-565 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-408 
  293 
  

   •407 
  771 
  

   •407 
  251 
  

   •406 
  732 
  

   •406 
  213 
  

  

  1-605 
  

   6 
  

   7 
  

   8 
  

   9 
  

  

  0-388 
  195 
  

   •387 
  712 
  

   •387 
  229 
  

   •386 
  748 
  

   •386 
  267 
  

  

  1-530 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-427 
  186 
  

   •426 
  627 
  

   •426 
  071 
  

   •425 
  516 
  

   •424 
  961 
  

  

  1-570 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-405 
  696 
  

   •405 
  180 
  

   •404 
  665 
  

   •404 
  150 
  

   •403 
  637 
  

  

  1-610 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-385 
  788 
  

   •385 
  309 
  

   •384 
  831 
  

   •384 
  354 
  

   •383 
  878 
  

  

  1-535 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-424 
  408 
  

   •423 
  855 
  

   •423 
  304 
  

   •422 
  754 
  

   •422 
  204 
  

  

  1-575 
  

   6 
  

  

  ' 
  7 
  

   8 
  

   9 
  

  

  0-403 
  125 
  

   •402 
  613 
  

   •402 
  103 
  

   •401 
  593 
  

   •401 
  084 
  

  

  1-615 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-383 
  403 
  

  

  •382 
  928 
  

   •382 
  455 
  

   •381 
  982 
  

   •381 
  510 
  

  

  1-540 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-421 
  656 
  

   •421 
  109 
  

   •420 
  563 
  

   •420 
  018 
  

   •419 
  474 
  

  

  1-580 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-400 
  577 
  

   •400 
  070 
  

   •399 
  565 
  

   •399 
  060 
  

   •398 
  557 
  

  

  1-620 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-381 
  039 
  

   •380 
  570 
  

   •380 
  101 
  

   •379 
  632 
  

   •379 
  165 
  

  

  1-545 
  

   6 
  

  

  7 
  

   8 
  

  

  9 
  

  

  0-418 
  932 
  

   •418 
  390 
  

   •417 
  849 
  

   •417 
  309 
  

   •416 
  771 
  

  

  1-585 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-398 
  054 
  

   •397 
  552 
  

   •397 
  051 
  

   •396 
  551 
  

   •396 
  052 
  

  

  1-625 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-378 
  698 
  

   •378 
  233 
  

   •377 
  768 
  

   •377 
  304 
  

   •376 
  841 
  

  

  1-550 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-416 
  233 
  

   •415 
  697 
  

   •415 
  161 
  

   •414 
  627 
  

   •414 
  093 
  

  

  1-590 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0-395 
  554 
  

   •395 
  057 
  

   •394 
  561 
  

   •394 
  066 
  

   •393 
  572 
  

  

  1-630 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0-376 
  378 
  

   •375 
  917 
  

   •375 
  457 
  

   •374 
  997 
  

   •374 
  538 
  

  

  1-555 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0*413 
  561 
  

   •413 
  030 
  

   •412 
  499 
  

   •411 
  970 
  

   •411 
  441 
  

  

  1-595 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0*393 
  078 
  

   •392 
  586 
  . 
  

   •392 
  094 
  

   •391 
  604 
  

   •391 
  114 
  

  

  1-635 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-374 
  080 
  

   •373 
  623 
  

   •373 
  167 
  

   •372 
  711 
  

   •372 
  256 
  

  

  1-560 
  

  

  0-410 
  914 
  

  

  1-600 
  

  

  0-390 
  625 
  

  

  1-640 
  

  

  0-371 
  803 
  

  

  