
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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