XIV 



ILLUSTRATIONS. 



FIGUBE PAGE 



83. Deep muscles of left thigh of 



Eana esculenta . . .100 



84. Do. (Dorsal view) . . . 101 



85. Left half of pelvis of Eana es- 



culenta .... 101 



86. Muscles of the right leg and 



foot of Eana esculenta (Dor- 

 sal view) .... 103 



87. Do. (seen from below) . .105 



88. Do. (Dorsal view) . . . 106 

 89-91. Muscles of the plantar sur- 

 face of foot of Eana escu- 

 lenta . . . 107, III, 112 



92-94. Dorsal view of muscles of 

 foot of Rana esculenta 



115, 117, 118 



95. Pectoral region of Eana es- 



culenta . . . .119 



96. Hind portion of back and thigh 



of Eana esculenta . . 1 20 



97. The nervous system of Eana 



esculenta, from the ventral 

 surface . . . .136 



98. Dorsal view of brain of Eana 



esculenta . . . . 143 



99. Transverse section through 



hinder end of Medulla ob- 

 longata . . . . 144 



100. Do. at the point of origin of 



the abducens nerve . . 145 



101. Do. of the auditory nerve . 146 



102. Ventral view of brain of Eana 



esculenta . . . . 149 



103. Lateral do 150 



104. Transverse section through the 



anterior portion of the optic 

 lobes opposite the origin of 

 the motor-oculi nerve . . 151 



105. Horizontal section through the 



brain to show the ventricles 153 



106. Section through the lower di- 



vision of the pituitary body 157 



107. Transverse section through the 



hinder portion of the cere- 

 bral hemispheres . .158 



108. Transverse section near the 



middle of the cerebral hemi- 

 spheres . . . .158 



109. From a transverse section 



through one of the cerebral 

 hemispheres . . -159 



110. Diagram to show the Vena 



spinalis posterior, etc. . .164 



111. Dorsal view of the orbit, etc. 



(deep dissection) (coloured) 



Plate I. 



112. Do. (superficial do.) (coloured) 



Plate I. 



113. View of roof of mouth ; mu- 



cous membrane,etc.(cooMra#) 



Plate I. 



114. Lateral dissection of head, etc. 



(coloured) Plate I. 



FIGURE PAGE 



115. Dissection of the floor of the 



mouth (coloured) Plate I. 



116. Right half of skull of Eana es- 



culenta . . . .174 



117. The nervous system of Eana 



esculenta, from the ventral 

 surface . . . .176 



118. Ventral view of the brain and 



spinal cord, to show the 

 points of exit of the spinal 

 nerves . . . .178 



119. Ventral view of the spinal 



ganglia . . . .179 



120. Schema of spinal ganglion . 179 



121. Dorsal branches of the spinal 



nerves . . . .181 



122. The brachial plexus . . . 1 84 



123. 124. Nerves of the ventral sur- 



face of the arm . .185,186 



125. The N. radialis . . .186 



126. Ventral view of the brain and 



spinal cord . . . .188 



127. The sciatic plexus . . .190 



128. Distribution of the sciatic nerve 193 



129. Nerves of the leg and sole of 



the foot . . . .194 



130. Distribution of the N. peroneus 196 



131. Sympathetic cord . . .198 



132. The heart and blood-vessels, 



seen from the ventral sur- 

 face 213 



133. The heart, seen from above . 214 



134. The frog's heart, seen from the 



ventral surface . . .215 



135. Dissection of a case in which the 



auricular septum is placed 

 more to the left than is 

 normal . . . .215 



136. Dissection of the heart from the 



left side . . . .216 

 137 I. Transverse section through 

 the junction of the hinder 

 and middle thirds of the 

 ventricle of E. temporaria . 217 

 137 II. Tranverse section through 

 junction of the middle and 

 anterior thirds of the same 

 heart . . . . .217 



138. Portion of a transverse section 



through the middle of the 

 ventricle of E. temporaria . 218 



139. Course of the cardiac nerves in 



the auricular septum . .219 



140. Group of nerve-cells on the car- 



diac nerve, from the auri- 

 cular septum . . .220 



141a. Small group of nerve-cells from 



the auricular septum . .221 



141&. Isolated nerve-cells from frog's 



heart 221 



142. Arteries and veins of the 

 Truncus arteriosus of Sufo 



. 222 



