. The biology of death; being a series of lectures delivered at the Lowell Institute in Boston in December 1920. Death (Biology). 192 BIOLOGY OF DEATH using this term "bom" to denote emergence from the pupal stage as imagines. Each following day these small bottles are inspected. Whenever a dead fly is found, it is removed and a record made in proper form of the fact that its death occurred, and its age and sex are noted. Finally, when all the flies in a given small bottle have died, that bottle is discarded, as the record of the duration. â 36 4Z 4d £4 60 66 72 7B 84 30 ABC IN IMVS
. The biology of death; being a series of lectures delivered at the Lowell Institute in Boston in December 1920. Death (Biology). 192 BIOLOGY OF DEATH using this term "bom" to denote emergence from the pupal stage as imagines. Each following day these small bottles are inspected. Whenever a dead fly is found, it is removed and a record made in proper form of the fact that its death occurred, and its age and sex are noted. Finally, when all the flies in a given small bottle have died, that bottle is discarded, as the record of the duration. â 36 4Z 4d £4 60 66 72 7B 84 30 ABC IN IMVS Fia. 48.â^Life lines for different inbred lines of descent in DrosophUa. of life of each individual is then complete. All the < bottles are kept in electric incubators at a constant temperature of 25° C, the small bottles being packed for convenience in wire baskets. All have the same food material, both in quality Eind quantity, so that the envi- ronmental conditions surrounding these flies during their life may be regarded as substantially constant and uni- form for all. Figure 48 shows the survival frequency, or Ix line of a life table, for six different lines of Drosophila, which have been bred in my laboratory. Each line represents. 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 Pearl, Raymond, 1879-1940. Philadelphia, London, J. B. Lippincott Company
Size: 1743px × 1434px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublisherphila, bookyear1922
