50 



ANALYSES OF THE POTATO. 



XV. ROUND PINKEYE (rouso). 

 Pl. 1 B, fig. 1. 



Yellowish white; roundish but flattened, somewhat shorter than wide; eyes purplish, in 6'»; 

 flesh yellowish, uniform. 



ObUined in the Albany Market, June 12, and was about two-thirds it) natural size. 

 I. Organic analytis of 300 grs. 



Water - 



Starch, - 



Albumen 



Casein - 



Dextrine 



Fibre, fat and gluten 



Dr)' matter .... 

 Ash 



Per centage of osh of dry matter 



Ash of the fibre 



2-05 



2. Analytis of the ash. 



Silex 1-100 



Coal - - ' 0-200 



Phosphates of magnesia, lime and iron - - 27-761 



Carbonate of lime -----. 0-410 



Magnesia ....... trace. 



Potash 19-941 



Soda 20- 116 



Chloride of sodium ..... 25-447 



Sulphuric acid ...... 5-938 



This analysis is calculated witiioul carl)onic acid or organic matter. 



Soda, in this potato, greatly exceeds the potash, and the amount of piiospiiates is greater 

 than is usually obtained. Probably the early potatoes are forced forward by the aid of 

 rich manures, and hence the excess of phosphates and soda. This, however, is only a 

 conjecture, which I have not the means of verifying. 



