ANALYSES OF MAIZE. 211 



PROPORTIOKS, 



Per centum. 



Water 80-750 



Dry 19-250 



Ash 2-800 



Calculated dry ...... 14-545 



INORGANIC ANALYSES OF THE SEVERAL PARTS OF THE PLANTS OF THE 

 EARLY WHITE FLINT CORN, AT DIFFERENT STAGES OF THEIR GROWTH. 



The dates on which the plants were taken for analysis, correspond with those on which 

 they were taken for proportions. I have hence, to save repetition, omitted to give descrip- 

 tions of the stage of advancement of the plants with the following analyses, as these are 

 given in full in connection with the proportions, and can be easily referred to. 



It would have been desirable to have made this series of analyses more complete ; but 

 the plant was divided into so many parts, that it was quite impossible for one to do it, and 

 carry on organic analyses of the same parts at the same time. Considerable, however, 

 has been done. The analyses were conducted during several successive weeks, when the 

 plants were growing most vigorously. They were also analyzed after they had ripened 

 their grain. The roots were freed of foreign matter, by washing them carefully in cold 

 water. The potash was obtained with bichloride of platinum. It is proper to state this 

 here, intismuch as by this process less potash has been obtained, and of course more soda 

 than by absolute alcohol. Both methods have been followed at different times; but in 

 this series, the bichloride of platinum has been exclusively resorted to for separating the 

 two alkalies. 



JULY 12. 

 1. Leaves (Description of plant on page 173) . | 



Carbonic acid ....... 7-60 



Silicic acid 13-30 



Sulphuric acid - - - - - . 2-06 



Phosphates 22 00 



Lime 0-68 



Magnesia 0*27 



Potash 9-88 



Soda 32-17 



Chlorine 5-08 



Organic matter 4-60 



93-54 S. 



