530 Dr. G. Thin on the Anatomy of 



through at the points of junction of the angles of the capillary cells*, and 

 it is reasonable to suppose that these points are always permeable to 

 fluids. 



We have seen that there is a rich supply of lymphatic channels in the 

 interior of a muscular fibre, and that the axis-cylinder of a nerve is pro- 

 bably in free communication with the lymph. The term " invagination," 

 as applied to the relation of the nerves and blood-vessels of particular 

 organs to the lymphatics, has no special physiological meaning, as it only 

 implies that at certain parts a condition that is universal can, by special 

 modes of procedure, be made capable of more easy demonstration. Every 

 nerve-fibre and every blood-vessel is irivaginated in lymphatics. 



That there is a plasmatic circulation infinitely more comprehensive 

 than that expounded by Virchow, is, as has been already remarked by 

 Ranvier, a fact which anatomy has placed on an incontrovertible basis. 



EXPLANATION OF THE PLATES. 



The Drawings were executed by Mr. J. C. Ewart from my preparations. The 

 objectives and ocular glasses referred to as indicating the magnify ing-powers 

 are those of Hartnack, with the exception of the No. XTI. immersion-lens 

 used in a few instances, which was made by Verick, and has the power 

 assigned to that mimber in his scale. Thus 3. VIII. means eyepiece No. 3 

 and objective No. VIII. 



PLATE VIII. 



Fig. 1. Cells from the cornea of a frog which was treated by the saturated solution of 

 potash. 3. VIII. Tube out. 



Fig. 2. Cells from the cornea of the ox treated by solution of potash. 3. VIII. 

 Tube out. 



Fig. 3. Cells from the cornea of the sheep treated by solution of potash. 3. VIII. 

 Tube out. 



PLATE IX. 



Fig. 4. Tendon from a mouse's tail coloured by nitrate of silver. 3. VII. Tube out. 

 Fig. 5. Perimysium of muscle of frog. Silver preparation. 3. VII. Tube out. 

 Fig. 6. Perimysium of a muscular fibre of frog. Silver preparation. 3. VII. Tube out. 

 Fig. 7. Cells from tendo Achillis of frog by solution of potash. 3. VIII. Tube out. 

 Fig. 8. Fascia from dorsal muscles of the mouse. Nitrate-of-silver preparation. 



3. VIII. Tube out. 

 Fig. 9. Cells isolated from the fascia of the dorsal muscles of the mouse by solution of 



potash. 3. VIII. Tube out. 

 Fig. 10. Continuous layer of flat cells investing the fascia of the muscles of the thigh 



of the frog. Nitrate-of-silver preparation. 3. VIII. Tube out. 



PLATE X. 



Fig. 11. Cells of the outis of the frog isolated by solution of potash. 3. VIII. Tube 



out. 



Fig. 12. Cells isolated from the skin of the ox by solution of potash. 3. VIII. Tube out. 

 Fig. 13. The anastomosis of the cells by means of the elastic fibres. Gold preparation 



from finger, macerated in acetic acid. 3. XII. 



* Endothelium en Emigratie door Dr. Laidlaw Purves, Utrecht, 1873. 



