326 Junior Naturalist Monthly. 



4. Turn your plant around-once in a while, thus exposing all parts to the light. 

 Then the plant will not become one-sided and aU the leaves will be green. In 

 connection with this suggestion, I wish you would make an experiment. Place a 

 geranium in a dark cupboard. Water it when it is dry but do not let it have any 

 Ught. At the end of two weeks, tell us about your plant. 



A DISEASED APPLE. 



Do you remember the time the doctor vaccinated you, and how 

 he did it? I want you to turn doctor and vaccinate an apple. There 

 will be this difference in results: you were vaccinated to prevent a 

 disease, but on the apple you will try to produce one. 



From a thoroughly rotted apple, take pieces no larger than a pin 

 head and insert them beneath the skin of a sound apple. Keep 

 the vaccinated apple in a warm room and in about a week watch 

 to see it get the rot disease. This disease is caused by a fungus. 

 You will not be able to see the fungus with the naked eye but it 

 surely will be there. 



The growth and spread of germs and fungi are very interesting 

 studies and I am sure you will find them so if you make simple 

 experiments. 



Uncle John. 



THE SCHOOL GROUNDS. 



Perhaps you are already beginning to think of spring. What 

 will you do then? You will clean up your front yard. You will 

 rake out all the matted and tangled grass, pick up the litter and 

 rubbish, pile up the wood in the back yard, and make the whole 

 place look "as neat as a pin." 



Now, will you not help to do the same thing for the school grounds? 

 I am sure you will. You wall want to see the grass look neat and 

 clean, the fence straightened up, the limbs and old paper and loose 

 stones picked-up, the holes filled. Perhaps you will want to plant 

 a few trees or other things. But the first and most important 

 part to do is to make the place look "spick and span." 



I am sure that this will be good work for your Junior Naturalist 

 Club. Uncle John wants to know how many clubs will try to do 

 this. When you meet again, bring this matter up and let your 

 secretary write Uncle John whether you will try to clean the school 

 grounds early in spring, just as soon as the birds are coming back. 



