CONTENTS. xiii 



PAGE 

 Of the bioplasm of bone . . . . . . . . . . 148 



Foraaation. of lacunae . . . . . . . . . . . . 149 



The offshoots do not correspond to the canaliculi. . . . 152 



Of the changes beneath the periosteum and medullary 



membrane. . . . . . . . . . . . . . 153 



Transplantation of periosteum . . . . . . . . 153 



Of the medulla or marrow of bone . . . . . . . . 154 



Of the marrow cells or myeloid cells and of the formation 



of the plates and spicules of cancellated tissue . . 154 



Of the changes occurring in an Haversian system of fully 



formed bone . . . . . . . . . . . . 155 



Formation of primary bone . . . . . . . . . . 158 



The disintegration and removal of bone . . . . ..159 



Origin of the disintegrating bioplasts .. .. .. 160 



Of the manner in which the removal of the bone is effected 160 

 Separation of bone ... . . . . . . . . . . 162 



Ipflammation of bone. . . . . . . . . . . . 162 



Rickets and caries . . . . . . . . . . . . 163 



Of the death of bone 164 



Of irritation and excitation . . . . . . . . . . 165 



Of Nerve Mires. 



Importance of bioplasm in highest tissues . . . . . . 167 



Nerve, tissue in the lowest organisms . . . . . . 168 



Irreconcileable opinions concerning the structure and ac- 

 tion of a nerve apparatus . . . . . . . . 170 



The active part of a nerve-fibre . . . . . . . . 170 



Fine nerve-fibres compound. ... . . . . . . 171 



No ends to be demonstrated , . . . . . . . . . 172 



Of plexuses and terminal networks .. .. .. .. 174 



Dark-bordered nerve-fibres . . . . . . . . . 175 



Of the pale nerve-fibres of the sympathetic system . . 176 



Fine fibres running with the dark-bordered nerve-fibres . . 176 



Of the axis cylinder. . . . . . . . . . . . . 177 



Advantages of the subdivision and interlacement of nerve- 

 fibres 177 



Fundamental and essential characters of a nervous system 178 



The course and distribution of nerve-fibres. . . . . . 182 



Of Nerve Centres. 



Central nerve-cells . . . . . . . . . . . . 185 



Angular or caudate nerve-cells . . . . . . . . . 186 



Bioplasm of the nerve-cell .190 



Of the spherical, oval, and pyriform nerve-cells . . . . 190 



