EXAMINATION OF SOME SPINAL NERVES 
47 
The overlapping of the fields of spinal nerves compared with that of peripheral nerve- 
trunks ....... 97 
The overlapping of distribution of the sensory as compared with that of the motor-nerve- 
roots . . . . . . . .106 
What functional significance does the ' overlapping ' possess r . . 106 
Individual variation, its frequency, and extent . . . . loS 
In muscles and in sivin . . . . . 109 
The scheme of the skin-fields of the brachial limb compared with that of the pelvic . 110 
The OT/rt'-fr;?/^/ //'w of the brachial limb . . . . iio 
The /«/(/-(2'wv<7///w of the brachial limb . . . . .110 
The number and position of metameres in the limb, as determined b}- the skin-fields . ill 
The absence of segmental significance in the number of the digits . . ill 
The distribution of the Vlllth cervical and of the Vlth lumbar nerves compared 112 
The distribution of the Ilnd thoracic and Vlllth post-thoracic nerves compared . 112 
Futility of antitropic homologies . . . . 112 
The nature of the similarity between the brachial and pelvic limbs . . . 113 
The rotation of the limb examined by the criterion of the segmental skin-fields . 113 
Torsion of the limb examined by the same criterion . . . .114 
The Mammalian limb considered as a fusion of rays . . . . 114 
Conspectus of nerve supply of brachial muscles . . . to face p. 114 
Rules of distribution of muscular nerves in the limbs . . . 115 
The segmental representation in the spinal cord of the groups of muscles acting about one 
and the same joint . . . . . . .115 
Movements produced by exciting individual cervico-brachial motor spinal-roots . 118 
Postures assumed in the Monkey after lesions of cervico-brachial roots . . 119 
Topography of spinal representation of brachial movements . . . 122 
The motor fibres for the individual muscles are, as for the pelvic limb, commingled in the 
spinal root of the brachial limb region, and not sorted into individual bundles as has 
been asserted . . . . . .123 
W. Krause's views on the innervation of the limb not supported by fact . . 123 
Section IV. — Spinal Reflex Action (Matter of Crooman Lecture, April, 1 897) . . 123-169 
Methods of investigation employed by the author . . . . 123 
Tabular statement of the most characteristic movements elicitable by spinal reflex action 
from each separate afferent spinal root of M^7r;7r«/ ;v^r/w . . .124 
The artificial character of such results ..... 127 
Their value purely technical and contributory to the explanation of more valuable and 
natural reactions . . . . . . .127 
'■Shock'' in experiments on the nervous system . . . . 127 
Definition of the term . . . . . . .128 
Shock confined to the parts on the non-cerebral side of the lesion . 128 
Vasomotor paralysis insufficient to explain ' shock ' . . . .129 
Effects of Transection of the Spinal Cord in the Monkey : — Pnraplegin in the 
Macaque . . . . . . . 130 
The crossed knee-jerk and skin-reflexes after spinal transection . . .130 
Similarity between the spinal reflex movements and movements obtainable from the 
cortex cerebri . . . . . . . 1^3 
Muscular wasting ; ulceration . , , , .133 
