(seq. 133)

62 Lect 5

by the external ones; for which Reason the
inner ones are the longest to give them an equal Qua-
ntity of Contraction. The Penniform Muscles are in
a Manner [?] from this Pressure Rectinial Muscles are
only used, where there is a small Force required, because
the larger they are, the more are their internal Fibres
compressed. The Penniform have their Fibres on both Sides
their Tendons. The Semipenniform only on one. The radi-
ated have one End much expanded, as the Pectoral, which
gives a Circular Motion to the Arm - Ligaments are
strong Membranes or Bodies of Fibres closely united. They
serve to bind down the Tendons, as in the Wrist, give Ori-
gin to the Muscles, & bind such Bones together as have
Motion.

Lecture 8^th March 6^th 1784 Lect 7, 1785

The Nerves are whitish Cords arising from
the Brain, & spinal Marrow in pairs, & pass^ing on in Rame-
fications all over the Body. ^{The Brain is a large Viscus contain
in the Cavity of the Skull & frequently denominated Encephalon} As to the Manner, in which
the Nerves perform their Functions, this is a Subject but
little understood. The Brain ^it is covered ^{by a number of Coats or Membranes *} externally by the
^{what is called the} dura Mater, but more immediately by ^{another Coat called} the pia Mater. The
dura Mater is a white tendinous strong Membrane of a

*these are called the Meninges of the Brain