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PRESERVED_SPECIMEN; ; ; microslide; microslide; Det. by: William C. Banta; IZ number 89241; lot count 1; Microslide 01, fragment; Microslide 02, fragment; Microslide 03, glycerin, fragment; Microslide 04, glycerin, fragment; Microslide 05, glycerin, fragment; 1992-06-05T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; microslide; Det. by: William C. Banta; IZ number 89241; lot count 1; Microslide 01, fragment; Microslide 02, fragment; Microslide 03, glycerin, fragment; Microslide 04, glycerin, fragment; Microslide 05, glycerin, fragment; 1992-06-05T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: Mary D. Rogick; CSBR Slide Grant Image 2015; Gray Museum; IZ number 73900; lot count 1; Microslide 01, fragment; 1947-08-01T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: Mary D. Rogick; CSBR Slide Grant Image 2015; Gray Museum; IZ number 73900; lot count 1; Microslide 01, fragment; 1947-08-01T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: Mary D. Rogick; CSBR Slide Grant Image 2015; Gray Museum; IZ number 73900; lot count 1; Microslide 01, fragment; 1947-08-01T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 87835; lot count 1; Microslide 01, fragment; Microslide 02, fragment; Microslide 03, fragment; Microslide 04, fragment; other number Birkeland Species No. A25; 1972-09-13T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 87837; lot count 1; Microslide 01, fragment; 1972-09-13T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 87835; lot count 1; Microslide 01, fragment; Microslide 02, fragment; Microslide 03, fragment; Microslide 04, fragment; other number Birkeland Species No. A25; 1972-09-13T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 87835; lot count 1; Microslide 01, fragment; Microslide 02, fragment; Microslide 03, fragment; Microslide 04, fragment; other number Birkeland Species No. A25; 1972-09-13T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 87835; lot count 1; Microslide 01, fragment; Microslide 02, fragment; Microslide 03, fragment; Microslide 04, fragment; other number Birkeland Species No. A25; 1972-09-13T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 89477; lot count 1; Microslide 01, fragment; 1964-05-01T00:00:00Z
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 89517; lot count 1; Microslide 01, fragment; 1964-03-09T00:00:00Z
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THEIR PROBABLE USE. 147 which move the lower mandible are distinctly seen, occupying the position of the palate, and extending back to the inner surface of the skull, if we may use such terms for an organization so remote. These motions are highly singular to witness, and one can scarcely look upon them without ascribing them to an active volition in the animal. But curious questions arise in connection with these birds' heads. Are they a part of the organiza- tion of the polype ? If so, why are they found attached to some cells, and not to others? why to some specimens and not to others ? and why are some species of a genus furnished with them, while others, essentially the same in every other respect, are desti- tute of any such appendage ? Anatomical examination does not throw any light on these questions. The animal within the cell appears to be organically independent of the bird's head, for as Dr. Reid affirms, and as I have myself witnessed in another species, the latter continues its movements for a considerable time after the polype has been dead. Dr. Johnston suggests that the use of the organ is to grasp and kill passing animalcules, which then may be drawn into the cell by means of the ciliary currents of the tentacles ; and this seems to me not improba- ble, and receives confirmation from the toothed structure of the beak, which, though strongly marked, I have not seen noticed. Plate YII. Fig. 1. Cella- laria ciliata, nat. size. 2. a portion of a branch, (magnified 200 diameters.) 3. a cell containing the contracted polype. 4. the bird's head appended to it. 5. an immature cell. G. the bird's head more
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PRESERVED_SPECIMEN; ; ; microslide; Det. by: William C. Banta; IZ number 89490; lot count 1; Microslide 01, fragment; 1964-02-23T00:00:00Z