﻿518 
  F. 
  E. 
  Wright 
  — 
  Methods 
  in 
  Microscopical 
  Petrography. 
  

  

  Table 
  II. 
  

  

  n 
  

  

  1/n 
  2 
  

  

  n 
  

  

  1/n 
  2 
  

  

  n 
  

  

  1/n 
  2 
  

  

  1-400 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0-510 
  204 
  

   •509 
  476 
  

   •508 
  749 
  

   •508 
  024 
  

   •507 
  301 
  

  

  1-440 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-482 
  253 
  

   •481 
  584 
  

   •480 
  916 
  

   •480 
  250 
  

   •479 
  585 
  

  

  1-480 
  

   1 
  

   2 
  

   3 
  

   4 
  

  

  0-456 
  538 
  

   •455 
  921 
  

   •455 
  306 
  

   •454 
  692 
  

   •454 
  080 
  

  

  1-405 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-506 
  579 
  

   •505 
  859 
  

   •505 
  340 
  

   •504 
  423 
  

   •503 
  707 
  

  

  1-445 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-478 
  921 
  

   •478 
  259 
  

   •477 
  598 
  

   •476 
  939 
  

   •476 
  281 
  

  

  1-485 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-453 
  468 
  

   •452 
  858 
  

   •452 
  249 
  

   •451 
  642 
  

   •451 
  035 
  

  

  1-410 
  

  

  1 
  

   o 
  

  

  3 
  

  

  4 
  

  

  0-502 
  993 
  

   •502 
  280 
  

   •501 
  569 
  

   •500 
  859 
  

   •500 
  151 
  

  

  1-450 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0475 
  624 
  

   •474 
  969 
  

   •474 
  315 
  

   •473 
  662 
  

   •473 
  012 
  

  

  1-490 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-450 
  430 
  

   •449 
  826 
  

   •449 
  223 
  

   •448 
  622 
  

   •448 
  021 
  

  

  1-415 
  

  

  6 
  

   7 
  

   8 
  

   9 
  

  

  0-499 
  444 
  

   •498 
  739 
  

   •498 
  035 
  

   •497 
  333 
  

   •496 
  633 
  

  

  1-455 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-472 
  361 
  

   •471 
  712 
  

   •471 
  065 
  

   •470 
  419 
  

   •469 
  774 
  

  

  1-495 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-447 
  422 
  

   •446 
  824 
  

   •446 
  228 
  

   •445 
  632 
  

   •445 
  038 
  

  

  1-420 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-495 
  933 
  

   •495 
  236 
  

   •494 
  539 
  

   •493 
  844 
  

   •493 
  151 
  

  

  1-460 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-469 
  131 
  

   •468 
  489 
  

   •467 
  849 
  

   •467 
  209 
  

   •466 
  571 
  

  

  1-500 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0-444 
  444 
  

   •443 
  852 
  

   •443 
  262 
  

   •442 
  672 
  

   •442 
  084 
  

  

  1-425 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-492 
  459 
  

   •491 
  769 
  

   •491 
  080 
  

   •490 
  392 
  

  

  •489 
  706 
  

  

  1-465 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0*465 
  934 
  

   •465 
  299 
  

   •464 
  665 
  

   •464 
  033 
  

   •463 
  400 
  

  

  1-505 
  

  

  6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-441 
  496 
  

   •440 
  910 
  

   •440 
  325 
  

   •439 
  741 
  

   •439 
  159 
  

  

  1-430 
  

   1 
  

  

  2 
  

   3 
  

   4 
  

  

  0-489 
  021 
  

   •488 
  338 
  

   •487 
  656 
  

   •486 
  976 
  

   •486 
  297 
  

  

  1-470 
  

   1 
  

  

  ; 
  

  

  4 
  

  

  0-462 
  770 
  

   •462 
  141 
  

   •461 
  513 
  

   •460 
  887 
  

   •460 
  262 
  

  

  1-510 
  

  

  1 
  

   2 
  

   3 
  

   4 
  

  

  0-438 
  577 
  

   •437 
  997 
  

   •437 
  418 
  

   •436 
  840 
  

   •436 
  263 
  

  

  1435 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-485 
  620 
  

   •484 
  943 
  

   •484 
  269 
  

   •483 
  595 
  

   •482 
  924 
  

  

  1-475 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-459 
  638 
  

   •459 
  015 
  

   •458 
  394 
  

   •457 
  774 
  

   •457 
  155 
  

  

  1-515 
  

   6 
  

  

  7 
  

   8 
  

   9 
  

  

  0-435 
  687 
  

   •435 
  113 
  

   •434 
  539 
  

   •433 
  967 
  

   •433 
  396 
  

  

  1-440 
  

  

  0-482 
  253 
  

  

  1-480 
  

  

  0-456 
  538 
  

  

  1-520 
  

  

  0-432 
  825 
  

  

  