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XVI. On the Influence of Physical and Chemical Agents upon Blood ; with special 
reference to the mutual action of the Blood and the Bespiratory Gases. 
By George Harley, M.D . , Fellow of the Boyal College of Physicians , Professor 
of Medical Jurisprudence in University College , London. Communicated by Pro- 
fessor Sharpe y, M.D., Sec. B.S. 
Received March 3, — Read March 10, 1864. 
In order to prevent repetition, as well as to facilitate the understanding of the researches 
about to be described, it is deemed advisable at once to give a brief explanation of the 
manner in which the experiments were conducted. In the first place, it may be men- 
tioned that all the gas-analyses herein detailed were made in strict accordance with 
the justly celebrated method of Professor Bunsen, so ably explained in his work on 
Gasometry. In the second place, the blood employed in the experiments was always 
obtained from apparently healthy animals, and with the few exceptions, presently to be 
alluded to, operated upon while still perfectly fresh. In the third place, the apparatus 
used in the majority of the experiments consisted of a graduated glass receiver of the 
shape represented in the accompanying figure (A), the neck of which was drawn out to 
a fine capillary tube, upon the end of which was placed a piece of caoutchouc tubing. 
mdccclxv. 5 c 
