306 APPENDIX. 



D. 

 APPENDIX TO CHAPTER IV. (p. 143). 



PTOMAINE OF THE MICROBE OF FOWL CHOLERA. 



Duclaux cites the following fact in his book, Ferments 

 et Maladies : " If a fowl is inoculated with a few drops 

 from a culture of fowl cholera, the bird sickens and dies ; 

 but if the liquid has been filtered before using it, through 

 plaster or porous china, the disease produced is not fowl 

 cholera. The bird rolls himself up and falls into a passing 

 sleep, from which he is roused by the slightest noise. 



" After a few hours, his recovery is complete. Thus 

 there are two kinds of symptoms in fowl cholera, of which 

 the most apparent is due to a species of narcotic (ptomaine) 

 secreted by the microbe, but capable of independent action, 

 and not in general ending fatally." 



E. 



APPENDIX TO CHAPTER V. (p. 171). 



CESSPOOLS. SYSTEM OF CAEEYING EVEEYTHING TO THE 

 SEWEES. 



This system, so long advocated in Paris by Durand- 

 Claye, implies that the water should pour into the recep- 

 tacles, so as constantly to flush the drain-pipes. A minimum 

 of ten litres per diem to each inhabitant is necessary for 

 this purpose. 



The household water and rain-water likewise pass 



