Physiological Anatomy of the Lungs

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                                =ments, the handles of both the pumps should be raised 
at the same time, so as to fill the barrels each with 
its appropriate fluid and then they should be allowed 
to descend passively, and great caution should be 
used (particularly at first) that the pressure is not too 
suddenly or rapidly made and that the force is not 
prolonged but that the blood-vessels should have op=
=portunities afforded them of relieving themselves 
from their distension, by causing the handles of the 
pumps from time to time to be supported, so that 
the pressure being temporarily removed the capillaries 
and larger vessels may contract by their own elas=
=ticity, and their coats may thus escape being 
stretched to a degree that might otherwise cause 
them to burst - 
In order to succeed thoroughly in making the in=
=jections, two important particulars are to be kept 
in view; first to allow the operation to occupy 
a very considerable duration of time, applying the 
force very gradually and carefully avoiding all jerks 
or violence: and secondly, to persevere in the in=
=jection for  long time at intervals even after 
the lung to the naked eye appears to have received 
its full supply of injection. The size will continue 
                            
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Manuscript details

Author
James Newton Heale
Reference
AP/43/4
Series
AP
Date
1860
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Physiological Anatomy of the Lungs, 1860. From The Royal Society, AP/43/4

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