Perhaps Prometheus was the first Darwin of antiquity, for he is said to have begun his creation from below, and after passing from the invertebrate to the sub-vertebrate, from thence to the backbone, from the backbone to the mammalia, and from the mammalia to the manco- cerebral, he compounded man of each and all:-英文原著 · 《Canterbury Pieces》
The main points in our genealogical tree were clearly recognised by Darwin in the sixth chapter of the "Descent of Man". Lowly organised fishes, like the lancelet (Amphioxus), are descended from lower invertebrates resembling the larvae of an existing Tunicate (Appendicularia). From these primitive fishes were evolved higher fishes of the ganoid type and others of the type of Lepidosiren (Dipneusta). It is a very small step from these to the Amphibia:英文原著 · 《Darwin and Modern Science》
Passing over the lower vertebrates, for lack of space to give them any adequate consideration, we may briefly take up the record of invertebrate life. From the overwhelming mass of material it is difficult to make a representative selection and even more difficult to state the facts intelligibly without the use of unduly technical language and without the aid of illustrations.英文原著 · 《Darwin and Modern Science》
I have been trying a good many experiments with heated water...Should you not call the following case one of heat rigor? Two leaves were heated to 130 deg, and had every tentacle closely inflected; one was taken out and placed in cold water, and it re-expanded; the other was heated to 145 deg, and had not the least power of re-expansion. Is not this latter case heat rigor? If you can inform me, I should very much like to hear at what temperature cold-blooded and invertebrate animals are killed.英文原著 · 《The Life and Letters-2》
"Wasps and bees certainly seem to rage, but if one comes to think, most of the invertebrata show very few signs of it." "I'm not so sure," said Sir Richmond. "I've never seen a snail in a towering passion or an oyster slamming its shell behind it. But these are sluggish things. Oysters sulk, which is after all a smouldering sort of rage. And take any more active invertebrate. Take a spider. Not a smashing and swearing sort of rage perhaps, but a disciplined, cold- blooded malignity. Crabs fight.英文原著 · 《The Secret Places of the Heart》
Which is a pretty sophisticated behavior for a mere invertebrate. which is a pretty sophisticated behavior for a mere invertebrate.演讲 · 《Hooked by an octopus ~ Mike deGruy》