XXXI. On the nature and formation of sponges: In a letter from John Ellis, Esquire, F. R. S. to Dr. Solander, F. R. S

Abstract

Sir, You, who study nature in an eminent degree, view her in all her works proceeding by regular gradations from the lowest to the most perfect of all created beings; among those animals commonly called zoophytes, you may plainly discover an evident approximation, from the rudest irregularly-formed sponge (which is the lowest being that I have yet observed to have the appearance of animal life) to the most beautiful and elegant red coral.