1905.] Distribution of Chlorides in Nerve Cells and Fibres. 193 



Plate 4. 



Fig. 17. — From the sciatic of frog, showing the occurrence of chlorides in the imbrica- 

 tions of Lanterman. x 590. 



Fig. 18. — From the sciatic of frog, illustrating a distribution of chlorides in the 



4' 



g 



medullary sheath sometimes found. Hg 2 (N0 3 ) 2 — , 30 minutes, ammonium 



sulphide, glycerine, x 590. 



Fig. 19. — From the sciatic of frog, illustrating the occurrence of chlorides in the 



g 



imbrications of Lanterman and in the axon. Hg 2 (N0 3 )„ 2 hours, 

 ammonium sulphide, glycerine, x 70. 



N 



Fig. 20. — Portion of end of capillary tube filled with albumen. AgN0 3 — + l - 5 per 



cent. HN0 3 . The reagent has diffused in the direction of the arrow, 

 x 105. 



Fig. 21. — Portion of another capillary tube similarly treated, x 105. 



Fig. 22. — Portion of a capillary tube filled with albumen and treated as in the case of 

 fig. 20. x 590. 



Fig. 23. — Portion of a capillary tube filled with albumen, to which sodium chloride was 

 added to bring the strength of the salt in solution up to 1*73 per cent. 

 Treated as in the case of fig. 20. x 70. 



Fig. 24. — Portion of a capillary tube filled with gelatine containing - 288 per cent, of 

 sodium chloride, illustrating irregularities in the distribution of the silver 

 precipitate. Treated as in the case of fig. 20. x 90. 



Figs. 25 and 26. — Portions of capillary tubes filled with commercial gelatine and 

 treated as in the case of fig. 20, illustrating peculiarities in the precipitation 

 of the silver chloride formed. Fig. 25 x 590, fig. 26 x 105. 



