i(() hitiucnce of Seed Weight, etc. on tin Potato Crop 



DESCRIPTION OF FIGURES. 



Fig. 1. ^5lio\v.s the plots as actually laid out. In the lowest row it should bo understood 

 that Lots H, I and J formed one row, and A, F and K another. The blackened portion 

 represents the yield j)er set in pounds, in each plot. 



fig. 2. Represents the standardised 3fields per set in each of the classes of seed weight A-G. 



Fig. 3. The crops from A-G are analysed as to the weight groui)s into which their con- 

 stituent tubers fall. The figure represents the standardised mean of the various groups 

 in each of the classes. 



Fig. 4. The analysis of croj)s of all -seed classes in the fourth or western .section of the 

 experimental plot showing the relation of tlie special classes H, I, J and K to the 

 normal. 



The writer has great pleasure iu acknowledjjiiifi his deep obligation 

 to Mr Udny Yule, C.B.E., M.A., F.R.S., who most kindly worked out 

 and elucidated the statistical data iu this paper. 



(Received Februur// llth, 1922.) 



