

CONTENTS. 



PAGE 



No. 57. On the development of the lymphatics in the stomach of the embryo-pig. By JAMES R. CASH. 



(3 plates, 3 text-figures) 1-15 



58. On the fate of the primary lymph-sacs in the abdominal region of the pig, and the development of 



lymph-channels in the abdominal anil pelvic regions. By F. L. REICHERT. (5 text-figures) .... 17-39 



59. Relative weight and volume of the component parts of the brain of the human embryo at different 



stages of development. By GEORGE B. JENKINS. (12 text-figures, 1 chart) 41-00 



60. Abnormalities of the mammalian embryo occurring before implantation. By GEORGE \V. CORNER. 



(2 plates, 1 figure) 61-66 



61. The development of the external genitalia in the human embryo. By MILO HERRICK SPADLDING. 



(4 plates, 2 text-figures) 67-88 



62. Further experimental studies on fetal absorption. By GEORGE B. WISLOCKI. (1 plate) 89-101 



III. The behavior of the fetal membranes and placenta of the guinea-pig toward trypau 

 blue injected into the maternal blood-stream. 



IV. The behavior of the placenta and fetal membranes of the rabbit toward trypan blue 

 injected into the maternal blood-stream. 



63. The distribution of mitochondria in the placenta. By G. B. WISLOCKI and J. A. KEY. (1 plate) . . 103-115 



64. Cyclic changes in the ovaries and uterus of swine, and their relations to the mechanism of 



implantation. By GEORGE W. CORNER. (4 plates, 2 text-figures) 117-146 



HI 



5 I 



