. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. Fig. Z7. The successive phases m the appearance of the photogenic units in the photophore on the -rp- "[J^J left fif^h thoracc Hmb of affims. The figures are taken .n order from the appearance ot the structures seen in passing in the direction indicated by the arrow in Fig. 26. a. Large nucleus, precursor of photogenic unit. b Nucleus with chromatin becoming less dense and forming a more uniform reticulum. ; Nucleus degenerating, vacuoles appearing within the limiting membrane,
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. Fig. Z7. The successive phases m the appearance of the photogenic units in the photophore on the -rp- "[J^J left fif^h thoracc Hmb of affims. The figures are taken .n order from the appearance ot the structures seen in passing in the direction indicated by the arrow in Fig. 26. a. Large nucleus, precursor of photogenic unit. b Nucleus with chromatin becoming less dense and forming a more uniform reticulum. ; Nucleus degenerating, vacuoles appearing within the limiting membrane, and the first deposits of granular substance occurring on the inner side of the limitmg membrane. d Nucleus almost disappeared, vacuoles still present, and granular deposits larger and more numerous. e Only the granular deposits now remain, regularly arranged and extending centripetally. ^. , ^ „ f. Enlargement of the regularly arranged granular masses almost obliterating the central cavity, which finally disappears completely. grJ. granular deposit; Un. limiting membrane; vac. vacuole; degenerating Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
Size: 1413px × 1769px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
