454 MONOCHROMATIC SUNLIGHT. | 
part without, or external to the neck, is a frustrum of a cone, 
while the part now within, or below the neck, is a lengthening a. 
cone, until the external frustrum wholly disappears, and the inter- 
nål cone is complete ; and the animal is at rest. i 
But little beyond conjecture can be said on the mode of use of 
the oral pore. It may be a sucking organ, thus imbibing nourish- 
ment. To me it seems that the entire external walls of the- 
proboscis are functional in this direction; and during thè slow 
‘inversion of this instrument, that is, while withdrawing from its 
hold, as each ring of hooklets is released, and involved into the 
crater of the returning cone, the limpid adipose flows over the era- 
ter’s edge ; thus the cone when returned contains a supply of nutri- 
ment. I hardly know how heterodox the view may seem to am 
yet the idea presses me that the osmotic doctrine of a m 
impulsion of the nutrient fluids and gases, plays an important 
role in the nutritive system of these curious beings. ae 
But my pen must stop with a confession. I must own that 
during the study, whose results have been given above, the $ 
called repulsiveness of the subject was both unseen and unfelt, m 
the reverent sense that came upon me; so that in studying this 
singular organism, so lowly and so minute, with a functiol 
structure so complete and complex, with adaptations 50 skilfully 
adjusted to a mission so mysterious —I found myself, not with- 
out emotion, repeating the sublime words of Saint A 
Deus est magnusrin magnis, maximus autem in minimis. 
peered 
Microscopical Soviet 
—8. L. ; 
NOTE.—An oral account of my discovery, with some 
given to the N, Y. Lyceum of Natural History, May 12, 1869. 
a paper, giving the results of my study, before the New Jersey 
From that paper the principal facts gi l I been 
ON THE USE OF MONOCHROMATIC phe 
; AN AID TO HIGH-POWER DEFINITION” 
BY DR. J. J. WOODWARD, U. 5- ARMY- 
A rew years ago I published, in the “ Quarterly Ta 
eroseopical Science” (Vol. vii, 1867, p. 253), Some 7 
on, March 91 
Gore 
* Read before the Philosophical Society of Washingt 
