204 THE NATURE-STUDY REVIEW [ 2 : 6-sept., 1906 



Just inside the lip of the shell and lining the whole edge of the 

 shell's mouth is the yellow collar ; it is this part of the snail which 

 makes the shell. The shell is made larger .by the addition of layers 

 to the edge of the mouth, consequently the lines of growth (which 

 show on the outside of the snail shell) are always parallel to the lip of 

 the shell. When the animal withdraws into the shell, the collar covers 

 the animal and hides it from view. 



When the animal is crawling about look under the right side of its 

 shell and note the hole in the yellow collar. This is the breathing 

 hole and leads into a large air sack, the lungs of the snail. If this 

 hole be watched for a few minutes, it will be seen to open and close. 

 Look for the breathing hole in a snail which has withdrawn into its 

 shell. 



The children should make sketches of the active snail in various- 

 positions and label all parts. Try modelling in clay. Descriptions in 

 writing should accompany the drawings. 



GARDENS FOR CITY SCHOOLS 



BY HENRY GRISCOM PARSONS 

 Assistant Director of Children's School Farm, DeWitt Clinton Park, New York City 



What can be done with a small garden connected with a school of 

 1500 children in a city ? 



Such a proposition was recently given me. The garden was 

 inspected and found to be fifty feet long and about ten feet wide on 

 either side of the stone walk. The soil was good but shallow, with 

 perhaps four to eight hours sun on clear days. A volunteer crop of 

 much maligned plants, commonly called weeds, had taken it upon 

 themselves to accompany some manure to the garden and had already 

 started up a fine growth. In a few square feet were found burdock, 

 yellowdock, plantain, dandelion, several wild grasses, wild strawberry 

 and chickweed. So the first suggestion was a wild plant section 

 where these friends should have first chance. The farmer seriously 

 objects to the many weeds which often come to his fields with the 

 manure; in this garden instead of being obnoxious, they are just 

 what is wanted for nature-study 



Among the wild plants suggested to be added are Jack-in-the-pulpit, 



