48 GERMINATION 



Grasses. 



Three tufts of grass of the same species and the same 

 size were selected and potted under exactly the same 

 conditions in 5-inch pots ; the blades being cut with scissors 

 in each to a height of 2-inches above the soil. We will call 

 them A, B, and C. 



A was not electrified but a piece of prepared arc carbon 

 was placed near the upper surface of the soil ; 



B was potted in the ordinary way as a control, and 



C was electrified by means of a dry cell of 1 . 5 volt, positive 

 to bottom, negative to top of soil. 



All three pots were placed in a good light in a cool green- 

 house and given the same quantity of water daily. Their 

 progress was as follows : — 



Nine days later — 



A Gain in height equalled 3|-inches. 



B „ „ ,, f-inch. 



C „ „ „ 4-inches. 



After twelve days — 



A Total gain in height equalled 4| -inches. 

 B „ „ „ l|-inches. 



C „ „ „ 5|-inches. 



After fourteen days — 



A Total gain in height equalled 6|-inches. 



B „ „ „ 2-inches. 



C „ ,, „ 6|-inches. 



A, appeared to be more robust than either of the 

 others. The cell of C, was found to be dis- 

 connected which no doubt accounted for some 

 slackening down. 



After sixteen days — 



A Total gain in height equalled 7-inches. 



B „ ,, „ 2f -inches. 



C „ „ „ 7|-inches. 



