[1] The ordinary consumption of oxygen is, for an adult, 1905 cubic inches per hour ([444]).
[2] On the Action of Leaves upon Plants, and of Plants upon the Atmosphere, by Charles Daubeney, M.D. F.R.S., Professor of Chemistry and Botany in the University of Oxford. Philosophical Transactions of the Royal Society of London, for the year 1836. Part I.
[3] An Experimental Inquiry into the Laws which regulate the Phenomena of Organic and Animal Life. By George Calvert Holland, M.D.
[4] It is not a perfectly accurate statement that the temperature of venous and arterial blood is precisely the same. The latest and best experiments concur in showing that arterial blood, at least in the heart and the great arterial trunks, is one or two degrees warmer than venous blood. The weight of evidence from experiment is also in favour of the opinion, that the different parts of the body are somewhat less warm as they recede from the lungs and heart; but the difference is so slight that it may be disregarded in the general argument.
[5] Dr. R. Thomson, British Annals of Medicine, No. 13.
[6] Experiments and Observations on the Gastric Juice, and the Physiology of Digestion. By W. Beaumont, M.D., Surgeon in the U. S. Army. Boston. 1834.
[7] See Dr. Andrew Combe on the Physiology of Digestion, in whose work a full detail of this instructive case is given. See also Mayo’s Outlines of Physiology, 4th Edit. Appendix.