602 



PROCEEDINGS OF SECTION G". 



In this connection it may be of interest to give a list of the ratios 

 of phosphorus pentoxide to lime in many of the common food stuffs. 



Lucerne hay 



Crimson clover hay 



Red clover hay ... 



Red clover hay ... 



Meadow hay 



Meadow hay 



White clover hay 



Oaten straw 



Oats, whole plant, green 



Oats, whole plant, ripe... 



Barley, whole plant 



Linseed cake 



Oats, grain 



Wheat bran 



Maize, grain 



Riitio 

 Phosphorus 

 I'cnto.xUle. 



100 : 



Lime. Authority. 



Wolff 



478 



445 



361 



359 



262 



247 



227 



181 



77 



62 



44 



24 



16 



9 



4 



Warington 

 Wolff 

 Warington 

 Wolff 



Warington 

 Wolff 



While the following are the ratios calculated from analyses made in 

 the Pretoria laboratories of African-grown produce : — 



Velvet bean hay {plucuna utilis) 

 Burnett, green {Sanguisorha minor) 

 Lucerne hay (Medicago sativa) . . . 

 Sheep's parsley (Petroselinum sativum) 

 Veld hay (mixed grasses)... •... 

 Tall fescue grass {Festuca elatior) 

 Rhodes grass hay (Chloris guyana) 

 Wheat straw 



Cow-pea hay (J^igna catjang) 

 Oaten straw 



Teosinte hay (EuchJcena mexicava) 

 Maple pea hay {Pisum arvense) ... 

 Broom-corn millet (Panicuin crus-galli) 

 Blue grass hay {Andropogon hirtus) 

 Sweet grass hay (Chloris virgata) 

 Calif ornian gi-een Moha (^Setaria sp.) 

 Mealie stalks (Zea mags)... 

 Teff grass hay (Eragrostis ahyssinica) 

 Boer Mauna hay (Setaria italica) 

 Golden millet hay (^Setaria sp.) ... 

 Oaten hay (Malmesbury, Cape Colony) 

 Oaten hay (Middleburg, Cape Colony) 

 Oaten hay (Harmon, Cape Colony) 

 Oaten hay (Magaliesberg, Transvaal) 

 Oaten hay (Pretoria, Transvaal) 

 Oaten hay (Potchefstrom, Transvaal) 

 Brewers' grains 

 AVTieat bran 



I'hosphorus 

 Pentoxide. 



100 

 100 



100 



581 

 485 

 431 

 312 

 320 

 258 

 250 

 250 

 248 

 209 

 203 

 202 

 174 

 168 

 139 

 137 

 136 

 125 



94 



88 



23^ 



57 i 



65 



44 

 62 I 

 53J 

 21 

 5-5 



y^ 



