500 
J. P. KLENCH. 
according to sex? The two sexes are always indifferently 
developed in the same horn of the womb, where fecundation 
took place. We need only to mention that sows, bitches, 
cats, goats and sheep will give birth to several young ones, 
from two to ten and twelve, of various sexes, to demonstrate 
that there cannot be the least foundation in that lateral sex 
theory. Even the twins of our human species will bring 
testimony against its rationality. 
It must be again admitted that this theory, if true, would 
find application to all animals. But in fowls, birds, etc., 
there is only one ovary and that is the left one, the right ovary 
becoming atrophied at an early age in nearly all species of 
fowls. This left ovary constitutes a large organ of the form 
of a grape, composed of many ovaries in different periods of 
development, the young ones being small and whitish, while 
the old ones are large and yellow and constitute the yellow 
part of 'the egg which is completed as it progresses towards 
the cloacum. Then the left ovary in fowls produces our 
fighting cocks and crowing roosters as a daily evidence 
against this lateral sex theory. 
Another instance is found in the rabbit, where the body of 
the womb is absent, and the two horns open in the vagina. 
It would be ridiculous to suppose that Mr. Jackrabbit knows 
how and when to draw on the right testicle and deposit the 
seed in the right horn so as not to commit error naturev to 
the disadvantage of the rabbit species. But the disastrous 
increase of rabbits in the Fresno and Kern countries is a 
prima facie evidence that the jackrabbit is not guilty of any 
mistakes of that nature. 
The mode of fecundation of fish spawn would be another 
instance against that theory, for in this case the fecundation 
is acomplished without the concours of either male or female. 
For the spawn is floating in the water and there impregnated 
at hazard by the floating sperm of the male fish. The im¬ 
pregnation is mere accident. 
