150 



pass between the individual bundles and become connected with 

 other offsets from different parts. 



In the foregoing observations, I have confined myself to the detail 

 of mere facts, which on that account must appear more or less uncon- 

 nected ; and I have refrained, purposely, from considering the gene- 

 sis, development, and morphological relations of the tissues therein 

 described. When my observations have been extended, I shall take 

 an early opportunity of promulgating my views of the physiological 

 relations of these textures. 



EXPLANATION OF PLATE XXIII. 



Fig. I. Fibres of the fibrous tissue of the true skin. The figure on the left 

 hand shows the effect of acetic acid upon these fibres. 



Fig. 2. Openings of cuticular glands. 



Fig. 3. The mode of arrangement of the fibres in the true skin and the ducts 

 of the glands. 



Fig. 4. Epithelial cells in the mucus from the middle part of the back. 



Fig. 5. Epithelial cells from the exterior of the mouth. 



Fig. 6. Epithelial cells from the neighbourhood of the anal orifice. 



