CHAPTER II 



CONCERNING EXPERIMENTS MADE IN 1906 



THE present research is a continuation of one a 

 report of which was presented to the Royal Med- 

 ical and Chirurgical Society in December, 1906, 

 in a communication entitled " On the de novo 

 Origin of Bacteria, Bacilli, Vibriones, Micrococci, 

 Torulse, and Moulds in certain previously super- 

 heated Saline Solutions, within Hermetically 

 Sealed Vessels," which is to be found in vol. xc. 

 of the Transactions of that Society. 



The experiments to which reference was there 

 made were of this nature. Two simple saline 

 solutions were employed, one of which was mostly 

 a vellow colour, and contained to each ounce of 



/ * 



distilled water only a few drops of a dilute solu- 

 tion of sodium silicate, together with about three 

 times as many drops of liquor ferri pernitratis; 

 while the other was colourless, and contained in 

 each ounce of distilled water a few drops each 



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