27 



Plant IJeasurements. 



T^he first plant measurements v/ere taken after anoroxl- 

 raately tv/o weelcs of growth fro;n the seed. At tiiat time the 

 length of eaoh leaflet from tip to junction of blade and 

 netiole T;as determined, as v.as also the greates'' vridth of 

 each leaflet, measured at right angles to the long axis. 

 The height of each plant was also measured, from the soil 

 surface to the base of the terminal bud. At the end of approxi- 

 mately four weeks of growth, the height measurement was re- 

 peated, after which the plants were cut off at the soil sur- 

 face, and the dry weight of tops were subsequently determined. 

 Before drying, photographic prints were prepared of the fresh 

 leaves. Bj means of these leaf-prints the leaf area (one 

 side) was afterwards determined planimeterically. All linear 

 measurements were made to the mearest millimeter, ^eal measure- 

 ments to the nearest 0.1 sq. cm., and weight measurements to 

 the nea.rest 0.01 gram. 



