crustaceans.-Small crustaceans.-The hydrachne.-Scutilary.-Cockch

inserts them in the vulva, one branch bending to the left, the other to the right toward each of the two oviducts. Same mechanism in crustaceans, save in the rare cases when they are hermaphrodite. Lobsters, langousts, écrevisses, crabs, like the scorpion, couple in a manner singularly resembling that of humans. Curious spectacle, that of the hen lobster attacked by the male, turned on her back, patiently permitting him to stretch over her, enlacing her claws and his pincers! Vision of a sabbat which Callot or Doré would only have painted in fear. Perhaps one would consider this before opening the armoured belly of these beasts who have bred their species among alg?, and in holes of the rocks? The gen

lar mussels which one sees on drift-wood are the embryos of wild-ducks, and one noble sailor has himself seen them taking flight.[1] The male linguatula is also smaller than the female, he has one testicle but two long copulating organs which simultaneously penetrate the female, ejaculating toward the two ovaries. Another small male is the hydrachne, water acarian, two or three times smaller than the female, he alone is provided with a tail at the end of which are

l of the lovers like a golden cascade, and the resurrection of the females gleams in the sun like a russet foam. The scutilary is an insect sometimes squarish or shield-shaped resembling the green wood louse, sometimes long and cylindrical with points and lines of all colours on its wings. One of them, scutiform, known as lineata, with red back and black stripes, is common on umbellifera. Copulation takes plac

ive female who moves on feeding, pulling him over the leaves until death detaches him; then she lays and dies in her turn. Butterflies are likewise very fervent, the males make veritable voyages in quest of females, as Fabre has proved. They often fly coupled, the stronger female easily carrying the male: it is a quite frequent sight in the country, these butterflies with four wings who roll, a little bewildered from flower to flower, drunken ships going where the sails bid them.

cabbard, nature, as one might say, leaves it to the imagination of each specie to decide the best manner of using them; all ways seem good if they fecundate. Nature has still more remarkable metho

rvous system which demands acts without caring for the instruments which must execute them. One finds proof of these changes in the accidental hermaphrodism of a great number of invertebrates and even of fishes, such as the cod, the herring, the scomber: a fundamental change since it shifts the animal from a superior to an inferior category; a recall to origins, doubtless, and an indication that the species liable to such accidents are far from being physiologically fixed. It is very probable that analogous accidents, less accentuated, visible sometimes in exterior malformation, invisible in their psychological influence, are the cause of certain tendencies in contrast to the sex apparent or even real. But this does not yet answer the main question: are ther

infinite variety, and that if it appears stable in most of the fixed specie

ent of anatifere, duck-bearing, latin anas, anatis, "A tree equally marvelous, is that which

oceeding by cavalage, the male inert, couched on the walking female, who started at the least alarm. Form narrow, almost cylindric