(512) 
LEEFT SDE: 
Largest breadth 
Measurings on Jan. 2d: Mid-dorsal line. of central area. = Mid-ventral line, 
Analgetic area (2 roots) 2.6 c.m. Interrupted. 6.5 cm. 
The place of interruption is situated at 7 c.m. distance from the mid-dorsal and 
at 10 c.m. from the mid-ventral line, and possesses a breadth of 3.6 c.m. 
Ozservation IV. A spotted female dog. (Series II, No. IV). On Jan. 7th 1902 
under aseptic conditions are cut through extradural: to the right the 13th, 14th, 
15th, 17th, 18th and 19th pair of roots; to the left the 15th, 16th and 17th. 
The autopsy on Jan. 22th confirms that this has been the case. 
The first determination of sensibility is made on Jan. 8th: the hind-legs of the 
dog are lamed. Fig. 21 represents the areas found to the right on Jan. 8th. 
Fig. 23. The 16th dermatoma. 
Isolated to the right between 3 roots on both sides. 
RiGHAT- SIDE 
The measurings on Jan. 8th are the following: 
Largest breadth 
Mid-dorsal line. of central area. Mid-ventral line. 
Cranial analgetic area (3 roots) 35 cm. 4.8 cm. + 7.2 cm. 
Sensible area (1 root) 3.1 , Beales is not reached 
(distance 0.7 c.m.) 
Caudal analgetic area (3 roots) 6.1 , 8.6 nn + 6.8 cm. 
LEFT SIDE. 
The measurings on Jan. 8th are the following: 
Largest breadth 
Mid-dorsal line. of central area. Mid-ventral line. 
Analgetic area (3 roots) 6.9 cam, arn 7 chm. 
On Jan. 22th the dog is again able to walk normally. Sensibility is determined 
once more. Death by chloroform. 
