14 JOURNAL OF TTTF, ROYAL ITORI^TCTTLTnRAL ROCTF.TY. 



be one (^f tlie lensi rnsfulions ns io ^o\], otluM'wisc^ il. could not, liiive 

 come iuio the w iek^spread cmi]1 i\ :it ion wliu'li makers \l :i fiu'm ('fop; so 

 that if we can apply this same mechanical analysis to the soil npon 

 \^'hich many localized plants are found we should expect an even closer 



Fig. 9. — Distribution of Hops 

 One dot equals 20 acree. 



Fig. 10. — Distribution of Barley. 

 One dot equals 40 acres. 



Fig. 11. — Distribution of Potatos. 

 One dot equals 20 acres. 



correlation between the distribution of the plant and the mechanical 

 composition of the soil. 



We have not as yet, however, decided as to what the mechanical 

 composition of the soil represents to the plant, which obviously cares 

 nothing for the size of the particles as such. The size of the particles, 



