Planting 

 the Garden 



10 HOUSEHOLD BACTERIOLOGY. 



difficult to prepare, the gelatine is more favorable for 

 the amateur's use.* 



In our garden we want only certain kinds of plants, 

 and we want to know just where they come from, we, 



FIG. 3. COLONIES OF DUST-PLANTS, GROWN ON GELATINE. 

 (After Conn.f) 



therefore, bake the dish and boil the jelly until sure 

 that nothing in either is alive. 



When ready to plant the garden, put the bottle of 

 jellied beef juice into a dish of cold water. Heat this 

 until the jelly is melted and then cool slightly. 



*For the careful, accurate preparation of such soil, consult 

 "Laboratory Work in Bacteriology," Frederick G. Novy, or 

 any other manual of laboratory practice in Bacteriology. 



A Petri dish may be obtained from the School for 3OC 

 and a bottle of agar ready for use for 24C (in stamps) sent 

 postpaid. 



tThe "Story of Germ Life," H. W. Conn; D. Appleton & 

 Co., Publishers. 



