XVI INDEX OF THE ILLUSTRATIONS. 



Ditto from arch of the aorta, 670 diam. - Plate xxu. Fig. 4 



Ditto from surface of the uterus, 670 diam. - - xxu. 5 

 Ditto from the internal surface of the pericardium, 



670 diam. - - - _ X xn. 6 



Ditto of lateral ventricles of brain, 670 diam. - xxvi. 6 E 



Ditto of mouth of menobranchus lateralis, 670 diam. xxvi. 6D 



EPIDERMIS. 



Upper surface of epidermis, 130 diam. - xxm. 1 



Under surface of ditto, 130 diam. - xxm. 2 



Epidermis of palm, viewed with a lens only - - xxiv. 1 



Ditto, magnified 100 diam. - - xxiv. 2 



Vertical section of ditto, 100 diain. - - xxiv. 3 



Ditto of one of the ridges, 100 diam. - xxiv. 4 



Epidermis from back of hand, viewed with a lens - xxiv. 5 



A portion of same more highly magnified, 100 diam. xxiv. 6 



Epidermis from back of hand, 100 diam. - - xxvi. 1 



Ditto, viewed on its under surface, 100 diam. - xxvi. 2 



Portion of ditto, with insertion of hairs, 100 diam. - xxvi. 3 



Ditto from back of neck, 670 diam. - - - xxvi. 5 



Detached cells of epidermis, 670 diam. - xxvi. 6 A. 



Cells of vernix caseosa, 130 diam. - - xxvi. 6s. 



Cells of ditto, 670 diam. - -xxvi. 6c. 



NAILS. 



Longitudinal section of nail, 130 diam. - - xxv. 1 



Ditto, showing unusual direction of striae, 130 diam. - xxv. 2 



Ditto, with different distribution of striae, 130 diam. - xxv. 3 



Transverse section of nail, 130 diam. - xxv. 4 

 Cells of which the layers are formed, 130 diam. and 



670 diam. - - - - - - xxv. 5 



Union of nail with true skin, 100 diam. - - xxvi. 4 



PIGMENT CELLS. 



Cells of pigmentum nigrum (human), 760 diam. - xxvn. 1 



Ditto of the same of the eye of a pig, 350 diam. - xxvn. 2 



Stellate cells of lamina fusca, 100 diam. - - xxvn. 3 



Ditto more highly magnified, 350 diam. - - xxvn. 4 A 



Cells of skin of negro, 670 diam. - xxvn. 4u 



Ditto from lung, 670 diam. - - - - xxvn. 4 c 



Cells in epidermis of negro, 350 diam. - - xxvn. 5 



Ditto in areola of nipple, 350 diam. - - - xxvn. 6 



Ditto of bulb of hair, 670 diam. - - - xxvm. 5 



