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It was then further discovered Steinmann finds an illustration of this fact in the echinodermata that the well-known "fundamental law of biogenesis" of Haeckel can be accepted only in a very restricted sense and may even lead to conclusions absolutely false. We desire to remark here that a "fundamental principle" should never mislead; if it does so, it is not a fundamental principle.
I look anxiously for the forth-coming number of your history of the Echinodermata. . . June 13, 1842. . . .Your letters have given me great pleasure: first, in assuring me that your zeal in ichthyology is undiminished, and that you are about to give such striking proofs of it to the British Association; and next that you still pursue with enthusiasm your admirable researches upon the glaciers.
All possible gradations, as he adds, may likewise be found between the pedicellariae of the star-fishes and the hooks of the Ophiurians, another group of the Echinodermata; and again between the pedicellariae of sea-urchins and the anchors of the Holothuriae, also belonging to the same great class.
Agassiz, for example, like Cuvier, and in opposition to the majority of the German and English zoologists, regards the Radiata as one of the great primary divisions of the Animal Kingdom, although no one knows anything about the significance of the radiate arrangement in the life of these animals, and notwithstanding that the radiate Echinodermata are produced from bilateral larvae.
There are only two orders extinct among the 'Crustacea'. There is not known to be an extinct order of these creatures, the parasitic and other worms; but there are two, not to say three, absolutely extinct orders of this class, the 'Echinodermata'; out of all the orders of the 'Coelenterata' and 'Protozoa' only one, the Rugose Corals.
There are only two orders extinct among the 'Crustacea'. There is not known to be an extinct order of these creatures, the parasitic and other worms; but there are two, not to say three, absolutely extinct orders of this class, the 'Echinodermata'; out of all the orders of the 'Coelenterata' and 'Protozoa' only one, the Rugose Corals.
He has to mend with his own hands every sort of thing that can break or wear in his house. Yet Mr. Peach is a votary of Natural History; not a student of the science in books, for he cannot afford books; but an investigator by sea and shore, a collector of Zoophytes and Echinodermata strange creatures, many of which are as yet hardly known to man.
In both, as in the Bathymetrical regions of the South Atlantic, the Testacea of the depths are generally smaller and less brightly coloured than those inhabiting the shallows. During this voyage notes of the habitats of considerably more than a thousand species of Mollusca and Echinodermata were carefully registered. The following Catalogue is founded on the monograph of Helicidae by Dr. Pfeiffer.
During the year 1836, though pushing forward constantly the publication of the "Poissons Fossiles," his "Prodromus of the Class of Echinodermata" appeared in the Memoirs of the Natural History Society of Neuchatel, as well as his paper on the fossil Echini belonging to the Neocomian group of the Neuchatel Jura, accompanied by figures.
Eagles, golden, new mates found by. Ear, motion of the; external shell of the, useless in man; rudimentary point of the, in man. Ears, more variable in men than women; piercing and ornamentation of the. Earwigs, parental feeling in. Echidna. Echini, bright colours of some. Echinodermata, absence of secondary sexual characters in. Echis carinata.
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