142 
ARTHUR E. GILES. 
DESCRIPTION OE PLATE XIV, 
Illustrating Mr. A. E. Giles’s paper on “ The Development of 
the Fat-Bodies in Rana temporaria.” 
The letters have the same significance in all the figures, b. Musoles of 
body wall on the ventral aspect of the vertebral column, f Fat-body. g. 
Genital organ (sex undifferentiated), k. Kidney, n. Notochord. 
Fig. 1. — Tailed Frog, dissected so as to expose the uriuogenital organs. 
The kidneys are seen lying against the vertebral column, and continuous 
anteriorly with the fat-bodies. Anterior and internal to the kidneys are the 
genital organs. X 4. 
Fig. 2. — Anterior end of the urinogenital organs of the tailed Frog shown 
in Fig. 1, enlarged. The right half of the figure shows the surface view, the 
left half shows the appearance in horizontal section. X 50. 
Fig. 3. — Normal pronephric tubule, from a tadpole still possessing external 
gills. X 350. 
Fig. 4. — Pronephric tubules showing fatty degeneration, from a tadpole 
whose hind limbs were just appearing. X 350. 
Fig. 5. — Transverse section through the lumbar region of a tailed Frog, 
showing the mode of development of the genital organs and their relation to 
the excretory organs at this stage. X 50. 
Fig. 6. — Sagittal section through the lumbar region of a tadpole that had 
recently acquired its fore-limbs, showing the anterior end of the nephros 
partly degenerated. X 60. 
Fig. 7. — Sagittal section through the lumbar region of a tailed Frog whose 
tail had begun to be absorbed, showing the fat-body connected with both 
kidney and genital organ. X 60. 
Fig. 8. — Sagittal section through the lumbar region of a young Frog that 
had just lost its tail, x 60. 
Fig. 9. — A young Frog at the same stage as the preceding, dissected so as 
to expose the urinogenital organs, which present the same condition as in the 
adult. X 4. 
