-Horizontal preparation of nictitating membrane of frog iu chloride of gold, showing the distribution of 

 non-mediillatrd iicrvi' fibres tr, it, capillary bluucl-vossels. 6. Coarse nou-inedullated nerve fibres giving off flue 

 , which f,,vm a plexus around the vessel, p. 79. (Oc., 3; Ob]., 8.) 



FK;. 88. Mesentery of frog tivaU-.l with <:hlondu of gold. ,t. Large trunk of iiiedullated nen-e fibres. 6. A sin-U- 

 niedullated nerve tibiv. r and </.. .<"on-nii- ( liill;it.-il ncrxc fibrrs. c. An ck'lncnt l.cl..]iL;i)i.i,' to (!.< tiiriiibnina i-rn),riit 

 of the mesentery. /. Nucleus of fine non-iuedullated nerve fibre, ij. Capillary lilood-vessel. p. 82. (Oc., 3; Obj., 8.) 



