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E X P L A N A T I O N OF THE TABLES.
II
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T A B L E X.
' X ' H I S table reprefents a fore ^^ew of the fpinal marrow of
a man. after cutting away the bodies of the vertebrae,
laying open the iheaths formed by the dura mater and arachnoid
coat, and cutting the anterior bundles of the fpinal nerves.
| , f
AD The fides of the atlas or firll; vertebra.
CDEI' The Iheaths formed by the dura mater and arachnoid coat laid open.
G The upper end of the fpinal marrow inclofed in its pia mater.
H Its under part at the nnder part of the fécond vertebra of the loins.
IK Folds, rugae, or joints of the fpinal marrow.
L The Cauda equina.
I , I. 2,1. 3,3. 4.4-
, , ,. Reprefents the fnft pair of cervical, or rather fubcervical vertebral
nerves, &c.
8, 8. Reprefents the firft pair of dorfal nerves.
2=, 20. The firfl; pair of lumbar nerves, &c.
M A feptum or partition between the holes in the dura mater for the paffage
of the anterior and poRerior bundle of fibres which compofe each
of the nerves of the fpinal marrow.
N The anterior bundle, in its proper hole, covered by a Iheatb of the dura
mater which covers the fpinal marrow.
O The poftcrior bundle with its proper hole and llieath.
P A ganglion in the pofierior bundle.
Q^The anterior bundle joined to the nerves which ilTue from the ganglion
of t RSTUh eT phoef tcarcicoerlT bouryn dnlee. rve, taking its rife from the fide of the fpinal
inarrow,
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