BIGELOW] 



PLAXTS WITHOUT SOIL 



71 



Fig 1. An egg-shell garden. Several common plants grown three feet tall from sawdust in egg- 

 shells Sawdust kept moist with water during germination and alterwards with the solution 



"^ErfT 





14 



Fig 2. In center " agateware" pan cotton plants are growing in bits ot crushed stone. In outer 

 pans beans are growing in sawdust Fed by the nutrient solution 



