338 General Notes. 
tissue. 2. The tracheal capillaries very. rarely end a 
(blind) in the phosphorescent organs, but most frequently anasto- 
mose with one another, forming an irregular meshwork. 3. The 
capillaries do not seem to enter into the structure of the paren- 
chymatous cells, but rather course along their surface, often irreg- 
ularly winding around and enveloping these. 4. The tracheal 
terminal cells are nothing more than the outer elements of the 
peritoneal layer at the base of tracheal capillaries, which radiate 
in a brush-like fashion from a chitinous spiral trachea. 5. The 
tracheal terminal cells are not the seat or point of departure of 
the light development. If this appears first in their vicinity itis 
only a consequence of the fact that these structures have, owing 
to their affinity for oxygen, stored up in themselves a supply of 
this gas, and give it off in greater quantity to the neighboritg 
tissues. 6. The light-producing function is peculiar to the parèt- 
chyma cells of the light-producing organs. It results from a slow 
oxydation of a substance formed by them under the controlor 
the nervous system. 7. The ventral light-organ was found to 
consist of two layers, the parenchyma-cells of which are quit 
similar to one another in their morphological characters, but they 
differ from one another in the chemical nature.of their ope 
8. The parenchymatous cells (is this the case with all ?) see 
nected with fine nerve-endings. 9. The light-organs arè m 
morphological equivalents of the fatty bodies. : 
PSYCHOLOGY. ae 
DREAMS.— 
“ We are such stuff 
l As dreams are made on.’’— The Tempest. = 
Shakespeare's lines may serve as the expression of a curious bs 
important psychological truth. We may truly and philosophie p 
be said to think and perceive, and therefore to exist easi 
dreams are made. For the only existence which we know 18 nich 
presented to us in consciousness according to certain be 
prescribe precisely how we are to be conscious, not only tee 
outside world which comes to consciousness through the: ee 
but also of the internal world of our own mind. | 
For example, it is impossible for the mind to think inte 1s. 
anything entirely by itself independent of all cause oF effect 
impossible to think a sensation such as coolness of @ ri 
blue by themselves without any substance which is 699 
that is blue. ae 
Tt is to this law of thought that dreams owe their p ; 
which in their turn they serve to illustrate and explain as = 
mental phenomenon can. i l 
Let us take for example one of the commonest © 
dreams. It is a warm night, and a man is sleeping ‘te Jeep 
- window. At first all the senses are unexcited, 
S 
