ANALYSES 6F THE POTATO. 



43 



1. Analysis of the ash of the Merino 'potato in three parts. 



Silex 



Coal 



Carbonate of lime 



Phosphates 



Potash 



Soda 



Sulphuric acid 



Chlorine - 



Insoluble 



Organic acids - 



Organic matter 



Magnesia 



1. Rose end. 



2. Heel end. 



3. Middle. 



1-5S6 



4-019 



1-653 



o-iso 



0-612 





0-070 



0-060 



0- 984 



14-533 



20-842 



23-714 



50-213 



43-855 



38-708 



13 713 



15-066 



18-518 



8-125 



8-424 



8-471 



1-110 



1-242 



0-397 



3-466 





4-210 



6-000 



0-813 



2-S30 



traee. 



trace. 



trace. 



93-996 



99-933 



99-990 



These analyses, it will be observed, are calculated without carbonic acid. The ash of 

 the ends effervesced strongly ; the middle, less so : in each instance showing the former 

 existence of organic acids, which, by burning, had been converted into carbonate. The 

 ash, however, in each instance, was converted in part into a caustic state. The potato, it 

 is proper to say, was not peeled ; but the outside was well cleansed from dirt by a brush, 

 without abrading- the skin. 



2. Organic analysis of the Merino potato. 



From the garden of Mr. Walsh, Lansingburgh. 



Middle. 



Starch 13-755 



Fibre ---'--.-- 6-766 



Albumen 0-112 



Gluten and fat 0-284 



Casein 0"605 



Dextrine 0-556 



Sugar and extract '.'-■".'.'. 2 -773 



MEAN PERCENTAGE OF WATER IN THE TWO ENDS. 



Water 74-3865 



Dry matter 25-6135 



Ash 0-7165 



Calculated dry 3-7685 



PROPORTIONS OF THE TWO ENDS. 



Rose end. Heel end. 



Water 81-301 67-472 



Dry matter 18-699 32 528 



Ash 0-973 0-460 



Ash calculated drv .... 5401 2-136 S. 



