File:Radium (1913) (14570182400).jpg

Identifier: n02radium01came (find matches)
Title: Radium
Year: 1913 (1910s)
Authors: Cameron, William Herron, 1874- ed Viol, Charles Herman, 1886- ed
Subjects: Radioactivity Radium Radium
Publisher: Pittsburgh (Radium Chemical Co., etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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L^ Fig. 12. Dorsal view of a normal untreated brain of an adult rat. Fig. 13. Dorsal view of the brain of an adult rat showing the marked devel- I^ADIUM 189 mental arrest in the formation of the neopallium. The meninges on the leftside of the brain are removed. Mother treated with gamma-ray irradiationon February 21, 1920, young were born on February 23rd. Brain from radiatedyoung removed on December 31, 1920. Dose = 1350 mc. hrs. (For furtherreference see text). The magnification is the same as for the drawing of thenormal brain. Fig. 14. A lateral view of the brain shown in Fig. 13. This shows the thin-ness of the remains of the cerebral cortex and its total absence in the frontaland occipital regions. (For further reference see text).
Text Appearing After Image:
Fig. 15. At the right is shown a normal untreated testicle of a white rat sur-mounted by a well-developed epididymis, which is partly obscured by fat.At the left is a radiated testis showing considerable atrophy. The single smalllobe at the very bottom of the photograph represents the remains of thetail of the epididymis, the head and body of that part being completely missing.The animal was treated in utero on February 21, 1920, was born February23rd, and was killed December 31, 1920. Dose = 1350 mc. hrs. of gamma-rayirradiation. 190 I^ADIUM The writer has no explanation to account for this phenomenon. Itwould appear that the treatment of the mother several days previous toconception has lessened the faculty of the later-developing embr)-o toform proper endothelium of the blood vessels, and the wide distributionof these lesions over the body of the embryo (peculiar to this group of-animals) would tend to substantiate this view. One female was injectedtwenty-two days before fertilizat

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