ScienceJohn Michels (Journalist) 1939 |
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Page 131
... solution ( say 1 per cent . hydro- chloric ) and then filtered and the solution electro- dialyzed , it will be found that the silica is carried equally in both directions . Other ions present are usually found unequally in anode and ...
... solution ( say 1 per cent . hydro- chloric ) and then filtered and the solution electro- dialyzed , it will be found that the silica is carried equally in both directions . Other ions present are usually found unequally in anode and ...
Page 346
... solution by the method previously described . The turbidity mea- surements were made with a photoelectric colorimeter by comparing a constant depth of the virus - urea solu- tion with a variable depth of a copper sulfate standard . It ...
... solution by the method previously described . The turbidity mea- surements were made with a photoelectric colorimeter by comparing a constant depth of the virus - urea solu- tion with a variable depth of a copper sulfate standard . It ...
Page 512
... solutions than in soil ; ( 2 ) heating the nutrient solution results in large increases in yields of crops ; ( 3 ) plants can be grown in nutrient solutions with greater water economy than in soil ; ( 4 ) food pro- duced by the water ...
... solutions than in soil ; ( 2 ) heating the nutrient solution results in large increases in yields of crops ; ( 3 ) plants can be grown in nutrient solutions with greater water economy than in soil ; ( 4 ) food pro- duced by the water ...
Contents
Sci 105 | 1 |
Philosophical Society American 382 E G CONKLIN 436 | 9 |
ALEXANDER J Science in the Old South | 12 |
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