﻿F. 
  W. 
  Very 
  — 
  Solar 
  Radiation, 
  

  

  627 
  

  

  The 
  following 
  examples 
  are 
  taken 
  at 
  random 
  to 
  show 
  that 
  

   the 
  observations 
  are 
  satisfied 
  by 
  the 
  factors 
  read 
  from 
  the 
  

   dotted 
  lines 
  of 
  the 
  chart 
  : 
  

  

  Mt. 
  Wilson. 
  

  

  e 
  

  

  R 
  

   1-336 
  

  

  F 
  

  

  2-79 
  

  

  A 
  

   3-727 
  

  

  Mt. 
  Wilson. 
  

  

  e 
  

  

  R 
  

  

  1-185 
  

  

  F 
  

   3-05 
  

  

  A 
  

  

  Oct. 
  20, 
  1906. 
  

  

  3-496 
  

  

  June 
  7, 
  1905 
  

  

  3-59 
  

  

  3-614 
  

  

  

  3-285 
  

  

  1-358 
  

  

  2-73 
  

  

  3-707 
  

  

  

  3-40 
  

  

  1-217 
  

  

  2-98 
  

  

  3-627 
  

  

  Aq. 
  = 
  l-59 
  mm 
  . 
  

  

  1-832 
  

  

  1-565 
  

  

  2-31 
  

  

  3-615 
  

  

  Aq.=7-17 
  mm 
  . 
  

  

  2372 
  

  

  1-345 
  

  

  2-66 
  

  

  3-578 
  

  

  

  1-791 
  

  

  1-558 
  

  

  2-30 
  

  

  3-583 
  

  

  

  2-280 
  

  

  1-357 
  

  

  2-64 
  

  

  3-582 
  

  

  

  1-555 
  

  

  1-596 
  

  

  2-24 
  

  

  3-575 
  

  

  

  1-786 
  

  

  1-433 
  

  

  2-48 
  

  

  3554 
  

  

  Morning 
  

  

  1-528 
  

  

  1-634 
  

  

  2-23 
  

  

  3-644 
  

  

  Morning 
  

  

  1-734 
  

  

  1-444 
  

  

  2-47 
  

  

  3-567 
  

  

  measures. 
  

  

  1-380 
  

  

  1-628 
  

  

  2-18 
  

  

  3-549 
  

  

  measures. 
  

  

  1-120 
  

  

  1-579 
  

  

  2-27 
  

  

  3-584 
  

  

  

  1-363 
  

  

  1-636 
  

  

  2-17 
  

  

  3-550 
  

  

  

  1-110 
  

  

  1-604 
  

  

  2-26 
  

  

  3-625 
  

  

  

  1-276 
  

  

  1-652 
  

  

  2-15 
  

  

  3-552 
  

  

  

  1-006 
  

  

  1-611 
  

  

  2-23 
  

  

  3-593 
  

  

  

  1-263 
  

  

  1-642 
  

  

  2-14 
  

  

  3-514 
  

  

  

  0-993 
  

  

  0-871 
  

   0-871 
  

   0-832 
  

   0-831 
  

  

  1-620 
  

   1-643 
  

   1-675 
  

   1-604 
  

   1-561 
  

  

  2-21 
  

   2-13 
  

   2-13 
  

   2-09 
  

   2-09 
  

  

  3-580 
  

   3-500 
  

   3-568 
  

   3-352 
  

   3-262 
  

  

  

  Mean 
  3 
  "602 
  

  

  

  

  Mean 
  3*542 
  

  

  At 
  sun's 
  meg 
  

  

  m 
  distance, 
  A= 
  3*547 
  

  

  At 
  sun's 
  mea 
  

  

  n 
  distance, 
  

  

  A= 
  3-634 
  

  

  Mt. 
  Wilson, 
  Aug. 
  22, 
  1905, 
  a. 
  m. 
  and 
  p. 
  m. 
  Aq.=13'8& 
  

  

  e 
  

  

  R 
  

  

  F 
  

  

  A 
  

  

  £ 
  

  

  R 
  

  

  F 
  

  

  A 
  

  

  3-104 
  

  

  1-229 
  

  

  2.97 
  

  

  3-650 
  

  

  1.122 
  

  

  1-497 
  

  

  2-33 
  

  

  3-488 
  

  

  2-967 
  

  

  1-242 
  

  

  2-92 
  

  

  3-627 
  

  

  1-138 
  

  

  1-458 
  

  

  2-34 
  

  

  3-412 
  

  

  2-254 
  

  

  1-327 
  

  

  2-71 
  

  

  3*596 
  

  

  1-244 
  

  

  1-476 
  

  

  2-37 
  

  

  3-498 
  

  

  2-176 
  

  

  1-348 
  

  

  2-68 
  

  

  3-613 
  

  

  1-265 
  

  

  1-481 
  

  

  2-37 
  

  

  3-510 
  

  

  1-281 
  

  

  1-506 
  

  

  2-38 
  

  

  3-584 
  

  

  1-419 
  

  

  1-437 
  

  

  2-43 
  

  

  3-492 
  

  

  1-261 
  

  

  1-497 
  

  

  2-37 
  

  

  3-548 
  

  

  1-447 
  

  

  1-449 
  

  

  2-44 
  

  

  3-536 
  

  

  1-124 
  

  

  1-520 
  

  

  2-33 
  

  

  3-542 
  

  

  1-676 
  

  

  1-403 
  

  

  2-52 
  

  

  3-536 
  

  

  1-110 
  

  

  1-531 
  

  

  2-32 
  

  

  3-552 
  

  

  1-722 
  

  

  1-391 
  

  

  2-54 
  

  

  3-533 
  

  

  1-023 
  

  

  1-510 
  

  

  229 
  

  

  3-458 
  

  

  2-053 
  

  

  1-325 
  

  

  2-63 
  

  

  3-485 
  

  

  1-015 
  

  

  1-547 
  

   1-568 
  

  

  2-29 
  

   •2-18 
  

  

  3-543 
  

   3-418 
  

  

  2-126 
  

  

  1-332 
  

  

  2-66 
  

  

  3-543 
  

  

  0-879 
  

   0-878 
  

  

  Mean 
  3-526 
  

  

  1*559 
  

  

  2*18 
  

  

  3*399 
  

  

  At 
  sui 
  

  

  i's 
  mean 
  

  

  distanc 
  

  

  e 
  

  

  

  

  

  

  

  

  A: 
  

  

  = 
  3-585 
  

  

  The 
  factor-curves 
  (dotted 
  lines, 
  fig. 
  1) 
  for 
  the 
  mountains 
  are 
  

   somewhat 
  more 
  square-shouldered 
  than 
  those 
  for 
  sea-level, 
  

   and 
  the 
  factors 
  to 
  be 
  used 
  on 
  the 
  mountain 
  for 
  the 
  larger 
  air 
  

   masses 
  and 
  vapor 
  pressures 
  are 
  smaller. 
  Apparently 
  the 
  moun- 
  

   tain 
  curves 
  for 
  values 
  of 
  e 
  greater 
  than 
  4 
  are 
  more 
  closely 
  

   crowded 
  together, 
  although 
  there 
  are 
  not 
  enough 
  low 
  sun 
  

   observations 
  to 
  assign 
  the 
  law. 
  Scarcely 
  any 
  effect 
  is 
  produced 
  

  

  