the coats of the vessels, into which the fluids were propelled was governed by the resistance, which these gave to the onward flow of the liquid, but could never exceed the pressure per square inch which the weight of the pistons exercised upon the fluids in the barrels of the pumps -
By simply raising both handles at the same time, the pumps were filled with their respective fluids and by allowing them passively to descend all risks and violence were avoided, and the fluids were allowed to flow into their appropriate blood=
=vessels, through flexible tubes which connected the pumps with them. The fluids themselves into which the suction popes of the pumps were inserted were kept of a proper temperature by being im=
=mersed into a water bath-
Precautions to be used
The operation of injecting the blood-vessels was, by this means made a very gradual one, and could be spread over a considerable time, without fatigue or provoking sudden muscular efforts on the part of the operator. Occasionally the handler of the pumps were supported so as to allow the capillary blood vessels to contract by their elasticity and thus to press onward the fluid already injected into them and afterwards to afford
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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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