524 
central third part. Then the frontal boundary passes over on the ventral side 
of the body to reach the ventral medianline nearly in front of the symphysis. 
Posterior boundary. This proceeds from the dorsal medianline, runs over the 
trochanter and reaches the frontal side of the lower leg 2 cm. below the patella, 
then passes upon the median plane of the leg and reaches the ventral medianline 
nearly in the middle of the symphysis. This root is cut under narcosis, and the 
spinal cord is moistened with sulphate strychnini 1 °/, round the place of entrance 
of Jumbalis V. The hyperreflectory field is marked on the skin. 
Lumbalis V. Anterior boundary. The most proximal point of it lies nearly 
in the boundary between the central and the lower third part on the lateral plane 
of the upperleg. From here the frontal boundary extends with a curve to the 
centre of the patella, and then passes over to the interior of the lower leg. Directed 
with a slight convexity towards the posterior rim the boundary-line continues then 
in a distal direction between the malleolus internus and the calcaneus. Then the 
boundaryline passes over to the planta pedis, runs at a short distance from the 
medial footrim and follows this as far as the middle of the first toe. There the 
boundaryline turns with an acute angle in a proximal direction to the dorsal side 
of the foot. Over the latter the boundaryline continues in a proximal direction, passes 
the joint of the ‘oot in the centre between the two malleoli, and proceeds first 
at 3 and afterwards at 11/, cm. distance from the posterior rim of the leg, till the 
point of issue is reached. This root is now cut under narcosis, and the spinal 
cord is moistened with a solution of strychnine round the place of entrance of 
“the succeeding root. 
Lumbalis VI. The most proximal point of this field falls just m the inferior 
part of the lateral plane of the upperleg, but more caudally and distally than that 
of the former field. From here the foremost boundaryline runs with a convex 
frontal curve in a distal direction, and passes the crista tibiae a little above the 
middle of the tibiae. The boundaryline is then continued on the medialplane of 
the lowerleg, and runs over the maileolus internus, then along the medial rim 
of the foot, in front cf the ball of the foot and passes then between the 3rd and 
the 4th toe te reach the dorsal side of the foot. The boundaryline proceeds over 
the latter nearly parallel to the exterior rim of the foot, behind the malleolus 
lateralis, and then nearly parallel to the posterior rim of the leg to the point of 
issue. After this root has been cut under narcosis, the spinal cord round the place 
of entrance of the succeeding root is moistened with a solution of strychnine. 
After the awakening from the narcosis the hyperreflectoric field is determined and 
marked on the skin. 
Lumbalis VII. The most proximal point of this lumbalis falls on the posterior 
rim of the lowerleg a little above the place where the calf muscles end and the 
tendon of Achilles begins. From here the boundaryline proceeds frontally with a 
convex curve and crosses the fibula a little above the malleolus lateralis. continues 
in front of this malleolus, in a slanting distal medial direction over the back of the 
foot and farther over the middle of the dorsal side of the 2»¢ toe, so that the 
medial side of the toe falls outside the field, passes over the end of the toe to 
the plantary side and proceeds then medially from the ball of the foot ina proximal 
direction. The boundaryline proceeds then along the medial rim of the foot over 
the posterior side of the malleolus medialis with an upward convexity to the point 
of issue. Now this root is cut, and the spinal cord round the place of entrance of 
the succeeding rool is moistened with strychnine. 
