AN APPARENT NEW POLARITY IN LIGHT . 
241 
Table . (Continued.) 
Values of R . 
0° 
30° 
60 ° 
90 ° 
120° 
150° 
180° 
210° 
240 ° 
270 ° 
300° 
330° 
+ 1-4 
2-000 
1-914 
2-012 
2-270 
2-620 
2-966 
3-318 
3-304 
3-206 
2-948 
2-598 
2-252 
+ 1*5 
2-000 
1-801 
1-753 
1-871 
2-123 
2-441 
2-742 
2-941 
2-989 
2-871 
2-619 
2-301 
+ 1-6 
2-000 
1-738 
1-569 
1-529 
1-654 
1-884 
2-168 
2-430 
2-599 
2-639 
2-514 
2-284 
+ 1-7 
2-000 
1-750 
1-516 
1-361 
1-328 
1-425 
1-628 
1-878 
2-112 
2-267 
2-300 
2-203 
+ 1-8 
2-000 
1-835 
1-613 
1-394 
1-240 
1-189 
1-260 
1-425 
1-647 
1-866 
2-020 
2-071 
+ 1-9 
2-000 
1-969 
1-834 
1-634 
1-423 
1-257 
1-181 
1-213 
1-348 
1-548 
1-759 
1-925 
+ 2-0 
2-000 
2-122 
2-122 
2-014 
1-825 
1-605 
1-426 
1-304 
1-304 
1-412 
1-601 
1-821 
+ 2-1 
2-000 
2-203 
2-340 
2-374 
2-296 
2-128 
1-914 
1-711 
1-574 
1-540 
1-618 
1-786 
+ 2-2 
2-000 
2-212 
2-427 
2-589 
2-653 
2-602 
2-450 
2-238 
2-023 
1-861 
1-797 
1-848 
+ 2-3 
2-000 
2-128 
2-328 
2-547 
2-725 
2-816 
2-796 
2-668 
2-468 
2-249 
2-071 
1-980 
+ 2-4 
2-000 
1-989 
2-083 
2-258 
2-467 
2-653 
2-770 
2-781 
2-687 
2-512 
2-303 
2-117 
+ 2-5 
2-000 
1-864 
1-814 
1-864 
2-000 
2-186 
2-372 
2-508 
2-558 
2-508 
2-372 
2-186 
+ 2-6 
2-000 
1-827 
1-675 
1-586 
1-583 
1-667 
1-816 
1-989 
2-141 
2-230 
2-233 
2-149 
+ 2-7 
2-000 
1-904 
1-756 
1-598 
1-472 
1-412 
1-438 
1-534 
1-682 
1-840 
1-966 
2-026 
+ 2-8 
2-000 
2-044 
2-006 
1-898 
1-749 
1-598 
1-488 
1-444 
1-482 
1-590 
1-739 
1-890 
+ 2-9 
2-000 
2-148 
2-249 
2-274 
2-218 
2-095 
1-938 
1-790 
1-689 
1-664 
1-720 
1-843 
+3-0 
2-000 
2-141 
2-305 
2-448 
2-531 
2-533 
2-454 
2-313 
2-149 
2-006 
1-923 
1-921 
+ 3-1 
2-000 
2-021 
2-120 
2-269 
2-429 
2-556 
2-616 
2-595 
2-496 
2-347 
2-187 
2-060 
+ 3-2 
2-000 
1-892 
1-851 
1-887 
1-990 
2-133 
2-378 
2-386 
2-427 
2-391 
2-288 
2-145 
+ 3-3 
2-000 
1-870 
1-738 
1-641 
1-606 
1-641 
1-738 
1-868 
2-000 
2-097 
2-132 
2-097 
+ 3-4 
2-000 
1-978 
1-895 
1-773 
1-646 
1-548 
1-508 
1-530 
1-613 
1-735 
1-862 
1-960 
+ 3-5 
2-000 
2-106 
2-161 
2-148 
2-072 
1-954 
1-824 
1-718 
1-663 
1-676 
1-752 
1-870 
+ 3-6 
2-000 
2-119 
2-254 
2-368 
2-431 
2-425 
2-352 
2-233 
2-098 
1-984 
1-921 
1-927 
+ 3-7 
2-000 
2-002 
2-070 
2-185 
2-317 
2-432 
2-498 
2-496 
2-428 
2-313 
2-181 
2-066 
+ 3-8 
2-000 
1-891 
1-821 
1-811 
1-862 
1-962 
2-084 
2-193 
2-263 
2-273 
2-222 
2-122 
+ 3-9 
2-000 
1-922 
1-814 
1-704 
1-623 
1-591 
1-617 
1-696 
1-804 
1-914 
1-995 
2-027 
+ 4-0 
2-000 
2-058 
2-061 
2-007 
1-911 
1-798 
1-700 
1-642 
1-639 
1-693 
1-789 
1-902 
+ 4-1 
2-000 
2-114 
2-227 
2-308 
2-337 
2-305 
2-222 
2-108 
1-995 
1-914 
1-885 
1-917 
+ 4-2 
2-000 
2-009 
2-074 
2-179 
2-296 
2-392 
2-442 
2-433 
2-368 
2-263 
2-146 
2-050 
Fig. 3. contains a graphical representation of the variations of intensity correspond- 
ing to these twelve different values of R, the elevation of the curve above its straight 
line representing the intensity, as given in the Table ; the curve at the bottom repre- 
sents the aggregate in the same manner (the sums of the ordinates being divided by 
twelve) : this figure corresponds to the case of the first problem, excepting that, as 
no variation is made in the value of X for the different curves, ^ which ought to be 
done, because s here = ^ the destruction of the bands in receding 
from the centre is not properly represented ; the central bands however are properly 
represented. Fig. 4. contains a representation of the effect of shifting the central 
origin of each set of bands by a space proportionate to R, so that the shift T8 in the 
values of s corresponds to 360°of R, the direction of the shift being that produced by 
placing the red end of the spectrum next to the mica ; the first curve at the bottom 
represents the aggregate in the same manner (the sum of the ordinates being divided 
by twelve) ; the second curve represents the aggregate, supposing twenty-four curves 
taken, the shift of s in the twenty-fourth being double of that in the twelfth ; the de- 
mdcccxl. 2 i 
