From " r *< HomsekcU Pkysician." by permission of Blot tie & Sou. Ltd. 



REPRESENTATION' OF A VERTICAL CUT THROUGH THE 

 EYEBALL IX ITS SOCKET 



In the figure, muscles (P. O. X) of the eyeball are shown. A is the 

 cornea ; it closes the front of the anterior chamber (B) . which is fined with 

 aqueous humour and the back wall of which is formed by the curtain of 

 the iris (D). In the middle of the back wall is the opening of the pupil 

 (C). through which is seen the lens (E). Behind the lens is the posterior 

 chamber (L). filled with vitreous humour. Entering the eye from be- 

 hind is the optic nerve (M), which is distributed to the retina (K). The 

 posterior wall of the eye shows from within outwards the image-forming 

 retina, the dark chccoid with blood-vessels (I), and the firm protective 

 derotic (H). 



Reproduced by courtesy of Messrs. F. Datidson & Co. 

 SECTION OF HUMAN SKIN 



1. To the outside with ridges is the horny layer of the epidermis 

 (stratum cornfum). 



2. Then comes the second layer of the epidermis, the Mai- 

 pighian layer (stratum malpighi); and traversing this is. seen the 

 coiled duct of a sweat gland. 



3. Third comes the under-skin or dermis. the seat of many 

 glands and blood-vessels. Its surface is raised in hillocks or 

 papillae. Into these there run blood-vessels and nerves. 



