1894.] MICROSCOPICAL JOURNAL. 147 



able matter, and thus in the mass look like a clear border 

 in the section with a row of deeply colored spots, the 

 nuclei running through them. In places directly under- 

 neath these cells of the uppermost level, in the midst of 

 the fibres of areolar tissue, can be seen a section of one 

 of the minute capillaries, and perchance, this may con- 

 tain a few corpuscles, this is the constant position of the 

 blood vessel as compared with the cavity of a secreting 

 organ, which opens on the free surfaces of the body, 

 namely with a layer of living cells coming between the 

 blood and the cavity. The cells thus on the surface and 

 in the duct portion of the tube are directly continuous 

 with those which form the deeper portions of the gland, 

 (figs. 2, 3,) the latter pass insensibly from the former, as 

 seen at the bottom of the ducts in some places in the sec- 

 tion. In the recess of the tube there are two kinds of 

 cells, the cells which more directly line the tube are ap- 

 proximately four-sided in section, they nearly fill the 

 lumen, their free ends being somewhat swollen, each has 

 a large round nucleus which nearly fills the cell. Besides 

 these cells that are characteristic of glands generally, 

 the tubular glands of the stomach are in places nearly 

 covered by cells called " peptic cells" or "cover cells," 

 which have the shape and relation shown in figs. 2, 3. 

 These large flat cells lie on the deeper side of the ordi- 

 nary glandular cells somewhat as the demi lune cells do 

 in the salivary glands. In a section through the middle 

 of the tube (fig. 3,) a peptic cell is seen to have a triang- 

 ular shape, and to be wedged in between the other cells. 

 These large cover cells are so conspicious in most sec- 

 tions as to nearly or completely obscure the other cells. 

 The relation of the blood vessels to the tubes is shown 

 in the general view, the capillaries arise from the hori- 

 zontal vessels in the submucous coat and run up between 

 the tubes, in this situation they surround the tubes, but 

 never pierce through them to enter their cavities, so that 



