CORN GROWEl'iS ASSOCIATION. 



69 



We may sum up roughly the changes that are spoken of in which 

 carbon plays the most important part as follows: 



Carbonic acid, gas and water. 



i Stareb and oil 



fOarboliyd rates -> Froteid matter 



I and I (as end products). 



J Nitrogen 

 1 Potassium 



Phospliorus 

 [Sulphur, etc. 



I Nitrogenous- f 



Nitrates— Relatives of ammonia Carboliydrates.-! (jomDounds- with ' 



I Phosphorus and Sulphur. I, 



Proteid matter 



During the few minutes that remain I shall speak very briefly of 

 those for us more important chemical elements which the plant obtains 

 from the soil, namely the nitrogen, the phosphorus and the potash. As 

 you know, the nitrogen is taken up by the roots in the form of a nitrate. 

 It is changed probably in the stem to a near relation of ammonia ana 

 goes in that form to the leaf cells where it is combined with carbon, 

 ox3^gen and hydrogen to form protoplasmic materials, these in turn 

 yielding the proteid which builds muscle and tissue in the animal. The 

 phosphorus enters the plant root in the form of a phosphate, the potash 

 probably as a salt of an organic acid. These also probably go first to 



ST. CHARI.ER YEIXOW.— Grown by C. S. Grelsnauer, O'Fallon, Mo. Ears deep 

 golden yellow, smooth, 914 to 10 inches long and 7 to W2 inches in circumference. Cob red. 

 Rows of Icernels rather open, making it somewhat loose on the cob. Kernels of fair 

 depth. This Is a good foundation for a promising variety. Exhibited at State Com Show. 

 Crop 1304. 



