312 SCIENCE OF COMMON THINGS. 



Susceptibility to contagion. Nutritive value of food. 



SO1S What do we mean by susceptibility to contagion f 



We mean that the blood of a person contains sub* 

 stances by the decomposition of which the exciting body 

 or contagion can be reproduced. If these substances 

 are not present, and if the system be perfectly healthy, 

 contagion will i'ail to produce disease. 



J3O13 What is the relative nutritive value of the different kinds of meat 

 Us food f 



The relative nutritive value of the different meats for 

 food is as follows : beef is the most nutritious / then 

 chicken, pork, mutton, and veal. 



2014 What varieties offish are the most nutritious f 



The haddock, the herring* the salmon, and the eel, in 

 order. 



2015 What vegetable of ordinary consumption is tht most nutritious f 



The cabbage. 



