MANUFACTURED COMMERCIAL FERTILIZERS 521 



munication from a landowner of classical education, calling atten- 

 tion to the fact that a certain " guaranteed analysis " showed 

 more than 100 per cent by adding together the percentages of all 

 ingredients. This would be true of the " Homestead tobacco 

 grower" if the statement included "Total phosphoric acid " and 

 " Equal to total bone phosphate," which are often reported. 

 The simplified statement would be as follows: 



HOMESTEAD TOBACCO GROWER 

 Guaranteed Analysis 



The following statement shows the complete line of fertilizers sold 

 by one of the large packing-house companies of Chicago, and the 

 quotations also show a hopeful tendency toward educational effort 

 on the part of some manufacturers. 



" 's FERTILIZERS 



Brands and Analyses 



" Maximum guaranteed analyses are misleading our guaranteed analyses 

 in table below are minimum. 



1 Phosphoric acid derived entirely from bone. 



