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the morning and evening. Avoid having plants too crowded. 
Thin the plants when they are two or three inches high, dur- 
ing the cooler portion of the day. Transplant seedlings pulled 
up to another bed, taking up a little soil with each plant. Pick 
flowers every day, and more will bloom. Allow a few of the 
best flowers to go to seed for next season's garden. Keep 
beautiful, fresh flowers in the school-rooms." 
Window Boxes. — "Because of the conditions which prevail 
in a school-room, window^ boxes must be comparatively deep 
and must contain a larger quantity of soil than is commonly 
necessary for the growth of plants in greenhouses in order 
that the adverse conditions may in part be counteracted. 
Boxes intended for window gardens should therefore be 
made at least six to eight inches in depth, should be rather 
broad, and of a length to conform to the window opening. 
The soil should be rich garden loam or a compost consisting 
of rotted sods and stable manure thoroughly mixed together 
and screened through a screen with at least a half-inch mesh. 
Before filling the box a layer of coarse gravel should be placed 
over the bottom to the depth of one inch. Holes should be 
provided in the bottom of the box, in order that any excess 
of moisture which comes from watering the plants may es- 
cape from the bottom. After placing this drainage material 
in the bottom of the box. fill it to within one inch of the top 
with the soil above described. In general, the plants grown 
in a window box should be small and compact in habit of 
growth, or those which can be readily trained on strings. 
Outdoor Aquaria. — These are very useful in nature-study 
work, for both the study of aquatic plants and animals. When 
once established, but little attention is necessary. A stone 
tank lined with cement is the most durable, but an old wash- 
tub, sake-tub, or a barrel sawn in half, is quite satisfactory. 
Sink the vessel in the ground in some unused portion of the 
school-yard, with the rim projecting out an inch or two 
above the surface. Cover the bottom with two inches of 
clean coral or fresh-water sand that has been washed until 
free from dirt. Stock the aquarium with pond weed, duck- 
weed, water hyacinth, etc. Be sure to put in a number of 
top-minnows or small gold-fish, to devour the mosquito 
larvae. Keep the water at a constant level by adding enough 
to counterbalance evaporation. 
"There certainly will come a day, 
As man becomes simple and wise. 
When schools will put their books away, 
Till they train the hands and the eyes ; 
Then the school from its heart will say 
In love of the winds and the skies : 
