[22] The solution, during the whole time, being exposed to a temperature of 75° to 85° F.

[23] As expressed, the proposition may be an approximation to the truth. M. Pasteur, however, really endeavours to lead his readers to believe that the “solid particles” which are efficacious, are, in all cases, living “germs.”

[24] ‘Nature,’ 1870, No. 36, p. 193.

[25] If his reasonings can be shown to be quite inconclusive, and if his results can be otherwise explained, some people may, at last, begin to recognize that their blind and mistaken faith in M. Pasteur’s work has been somewhat misplaced.

[26] M. Pasteur attempted to make a distinction in the case of slightly alkaline or neutral fluids (loc. cit., pp. 60–65). I have endeavoured to show the untenability of his conclusion in ‘Nature,’ 1870, No. 37, pp. 224–227.

[27] ‘Nature,’ 1870, No. 35, p. 171.

[28] I always employ a solution of gum mastic and bismuth in chloroform. If a different varnish be employed, it is of course necessary to ascertain whether its application is injurious to the enclosed Bacteria.

[29] If an unboiled specimen of milk be mounted, a multiplication of living particles takes place here and there amongst the fat globules, just as the multiplication of Bacteria occurs in a vegetable infusion; but in the boiled specimen no trace of such multiplication can ever be detected.

[30] Those particles which come to rest, in such cases, are always in contact with one or other of the contiguous surfaces of glass.

[31] The specific gravity of the fluid being constant. Where this is dense or viscid, as with glycerine, Brownian movements do not occur at all.