of lead in liquid size for the pump which is con=
=nected with the pulmonary artery, and the ordinary
injection of size and vermilion for that allotted to
the pulmonary veins, and in this case an addi=
=tional weight should be attached to the lever, be=
-longing to the pump, which propels the liquid
into the artery; if, on the contrary, it be required
to demonstrate the tufts of capillaries from which
the Pulmonary veins take their origin, then it will
be necessary to use the yellow injection for these
and the red for the arteries, and to apply the pre=
=ponderating force of pressure on the pump which
propels the yellow. The reason of this is that the
yellow injection readily penetrates capillaries,
which the red injection can only with difficulty
be made to enter and after the injection has been
made the yellow vessels shew themselves more vividly
in contrast with the red. From this it will be
seen, that it depends upon the circumstance as
to which of the two has been subjected to the prepon=
=derating pressure to determine whether the injected
capillaries rather partake of the colour of that which
is propelled into the arteries or of that sent into the
veins - Having made these preliminary arrange=
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Manuscript details
- Author
- James Newton Heale
- Reference
- AP/43/4
- Series
- AP
- Date
- 1860
- IIIF
-
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Cite as
Physiological Anatomy of the Lungs, 1860. From The Royal Society, AP/43/4
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