 ... they cover the surface generally, and form dense groups round the spines. Each consists of a soft stem, bearing on its summit, or (when branched) at the point of each branch, a sort of forceps of calcareous matter not unlike a crab's claw, except...  The Cyclopaedia of Anatomy and Physiology - Seite 32herausgegeben von - 1839Vollansicht - Über dieses Buch
 | Robert Bentley Todd - 1839 - 1036 Seiten
...calcareous matter not unlike a crab's claw, except that the two blades are equal and similar. When the point of a fine needle is introduced between the...impervious. The third sort of appendages consists of tliose which are named the respiratory lubes ; they will be considered afterwards. The other genera... | |
 | Edward Forbes - 1841 - 374 Seiten
...calcareous matter, not unlike a crab's claw, except that the two blades are equal and similar. When the point of a fine needle is introduced between the...their stem, it may be remarked, is quite impervious." I have examined them very carefully in the same species. Those on the body and upper spines differ... | |
 | 1842 - 1162 Seiten
...calcareous matter not unlike a crab's ¡ claw, except that the two blades are equal and similar. When the point of a fine needle is introduced between the...of these prehensile organs is not apparent ; their siem, it may be remarked, is quite impervious. The third sort of appendage consists of those which... | |
 | 1842 - 538 Seiten
...point of a fine needle is introduced between the blades, which are for the most part open in a fresh am vigorous specimen, they instantly close and grasp...of these prehensile organs is not apparent; their slem, it may be remarked, is quite impervious. The third sort of appendage consists o; those which... | |
 | 1842 - 1046 Seiten
...of calcareous matter not unlike a crab's claw, except that the two blades are equal and similar When the point of a fine needle is introduced between the...blades, which are for the most part open in a fresh am vigorous specimen, they instantly close and grasp it with considerable force. The particular use... | |
 | Society for the diffusion of useful knowledge - 1842 - 536 Seiten
...of calcareous matter not unlike a crab's claw, except that the two blades are equal and similar When the point of a fine needle is introduced between the...blades, which are for the most part open in a fresh am vigorous specimen, they instanlly close and grasp it with considerable force. The particular use... | |
 | 1842 - 546 Seiten
...calcareous matter not unlike a crab's claw, except that the two blades are equal and similar. When the point of a fine needle is introduced between the blades, which are for the most part open in a fre>h and vigorous specimen, they instantly close and grasp it with considerable force. The particular... | |
 | 1844 - 288 Seiten
...a sort of forceps, not unlike a crab s claw, except that the two blades are equal and similar. When the point of a fine needle is introduced between the blades, which are for the most part open, they instantly close and gra*p it with considerable force. These organs cover the surface generally,... | |
 | William Benjamin Carpenter - 1845 - 612 Seiten
...not unlike a crab s claw, except that the two (sometimes three) blades are equal and similar. When the point of a fine needle is introduced between the...The particular use of these prehensile organs is not evident. They are not confined to the neighbourhood of the mouth ; but, where they exist at all (for... | |
 | William Benjamin Carpenter - 1848 - 656 Seiten
...matter, not unlike a craVs claw, except that the two (sometimes three) blades are equal and similar. When the point of a fine needle is introduced between the...The particular use of these prehensile organs is not evident. They are not confined to the neighbourhood of the mouth ; but, where they exist at all (for... | |
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