346 PLEASANT WA YS IN SCIENCE. 



enjoyed to his habit of abstaining for a whole day, once a 

 month, from food of all sorts ; and many have found the 

 Lenten rules of abstinence beneficial. As a rule, however, 

 change of diet is a safer measure than periodical fasting or 

 abstinence from either heat-producing or flesh-forming food. 

 It must be noticed, in conclusion, that young persons ought 

 not, without medical advice, to fast or abstain for any length 

 of time from the more important forms of food, as serious 

 mischief to the digestive organs frequently follows from 

 either course. 



