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Page 60
... and wherever moisture hung on the walls , the concrete would turn slowly to calcium sulphate and crumble away . These new plants are either pure bravado , or else the science of sewage disposal is about to turn over a new leaf ...
... and wherever moisture hung on the walls , the concrete would turn slowly to calcium sulphate and crumble away . These new plants are either pure bravado , or else the science of sewage disposal is about to turn over a new leaf ...
Page 128
There is a concrete base formed in the bed of the stream and supports arranged for a turn table on which is journaled a shaft carrying the water wheel . Crank shaft and gears are connected with a suction pump .
There is a concrete base formed in the bed of the stream and supports arranged for a turn table on which is journaled a shaft carrying the water wheel . Crank shaft and gears are connected with a suction pump .
Page 130
In the favorable cases the plants turn towards the radium rays EFFECTS OF RADIUM ON PLANT GROWTH . Top photo : Oat sprouts exposed to radium for forty- eight hours . All the sprouts are bent . Second photo : Oats - looking down upon the ...
In the favorable cases the plants turn towards the radium rays EFFECTS OF RADIUM ON PLANT GROWTH . Top photo : Oat sprouts exposed to radium for forty- eight hours . All the sprouts are bent . Second photo : Oats - looking down upon the ...
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