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Transverse Section of Decalcified Human Tibia, from near the surface of the shaft : H, II, Haversian
canals, with their systems of concentric lamellae ; in all the rest of the figure the lamellte are cir-
cuniferrntial ; S, ordinary perforating fibres of Sharpey e, c, elastic perforating fibres (drawn
;
under a power of about 15U diameters).
(d) The Lacunae or Lymph-spaces (osseous corpuscles) are best
demonstrated in thin sections, prepared by grinding instead of softening
by acids and cutting with a knife or
microtome. When examined by trans- Fig. 8.
mitted light the lacunse have a dark
appearance, but when seen with a dark
background, the light being thrown
u]3on them, they will appear quite
white. They are very small cavities
situated between the lamellae of the
bone, flattened ellipsoidal in shajje,
and with many radiating elongations. Lacunae of Osseous Substance (niacnified oOO
diameters) : a, lacuna ; b, canaliculi.
(e) The Canaliculi are very fine
canals opening into the radiating elongations of the lacunse. They ex-
tend between and through the different lamellae, giving free communica-
tion to the lacunae situated between the various lamellae ; they also pass
from the lacunae to the Haversian canals, the surface of the bone, and
the medullary canals, and are intimately connected with the lymphatic
vessels situated in and around the bones, showing that the lacunae and
canaliculi form the lymphatic system of the osseous structure,
(/) The Bone-cells are flattened and nucleated, and are situated
within each lacuna, with prolongations extending into the canaliculi.
In structure they are analogous to the connective-tissue corpuscle.
" Rouget and Neumann have been able to detach tlie proper wall of the
Transverse Section of Decalcified Human Tibia, from near the surface of the shaft : H, II, Haversian
canals, with their systems of concentric lamellae ; in all the rest of the figure the lamellte are cir-
cuniferrntial ; S, ordinary perforating fibres of Sharpey e, c, elastic perforating fibres (drawn
;
under a power of about 15U diameters).
(d) The Lacunae or Lymph-spaces (osseous corpuscles) are best
demonstrated in thin sections, prepared by grinding instead of softening
by acids and cutting with a knife or
microtome. When examined by trans- Fig. 8.
mitted light the lacunse have a dark
appearance, but when seen with a dark
background, the light being thrown
u]3on them, they will appear quite
white. They are very small cavities
situated between the lamellae of the
bone, flattened ellipsoidal in shajje,
and with many radiating elongations. Lacunae of Osseous Substance (niacnified oOO
diameters) : a, lacuna ; b, canaliculi.
(e) The Canaliculi are very fine
canals opening into the radiating elongations of the lacunse. They ex-
tend between and through the different lamellae, giving free communica-
tion to the lacunae situated between the various lamellae ; they also pass
from the lacunae to the Haversian canals, the surface of the bone, and
the medullary canals, and are intimately connected with the lymphatic
vessels situated in and around the bones, showing that the lacunae and
canaliculi form the lymphatic system of the osseous structure,
(/) The Bone-cells are flattened and nucleated, and are situated
within each lacuna, with prolongations extending into the canaliculi.
In structure they are analogous to the connective-tissue corpuscle.
" Rouget and Neumann have been able to detach tlie proper wall of the
