334 Dr. Reuben on moving Blood-corpuscles within the Retina. 
the eyes adjusted to their place, there is always at the same time a 
pretty distinct consciousness of the back-ground (sky or cloud) as 
distant, and as being, directly before the eye, mottled with pris- 
matic colors, faint but real; sometimes taking the appearance of 
mosaic pavement, or of small colored cirro-cumuli ; so that when 
the glass is aside, one is disappointed at seeing no cloud, or one of 
different appearance. In this case, the colors seem mainly due and 
red. The effect I had somewhat unconsciously noticed before ; 
have seen it very positively many times since. Sometimes the 
cused to the near field of the moving discs. 
j 
moving points seen as minute, not colored, few, very bright, 
quick-moving, and fugitive. Through two thicknesses of the 
rn glass: points fewer, and more fugitive, but quite well de- 
ned. 
d.—Through dark green formed by combination of yellow and 
light blue: Looking long and steadily, the eye finds the field of 
the objects, and so adjusts itself as to see many of them, though 
only tolerably distinct. 
e.—Through grass-green glass: The shining lines readily and 
e course of the whole line; though this may have been so. 
The black and the bright portions both suddenly and completely 
disappeared. 
.—Same time, and medium: Found, very evident and certain, 
a larger channel or spot of ingress where a more numerous, 
crowded and confused body of the moving objects came at every 
pulsation, pouring in, as of from without or beyond the rest, toward 
