CuAP. III. OF THE KADICIB OF THE BEAN. 139 



morning deflection reduced to about 40° from the perpen- 

 dicular. 



(31.) A splinter of thin glass gummed to apex, after 9 h. no 

 effect, but it was then found not to be touching the apex of the 

 radicle. Next morning a square of card was fixed with shellac 

 to it, and after 9 li. radicle greatly deflected from the card. 

 After two additional days the deflection had decreased and was 

 only 35° from the perpendicular. 



(32.) Small square of sanded card, attached with thick gum- 

 water laterally lo the apex of a long straight radicle: after 9 h. 

 greatly deflected from the perpendicular and from the card. 

 Curvature extended for a length of '22 of an inch from the 

 apex. After 3 additional hours terminal portion deflected at 

 right angles from the perpendicular. Next morning the curved 

 portion was '36 in length. 



(33.) Square of card gummed to apex : after 15 h. deflected at 

 nearly 90° from the perpendicular and from the card. 



(34.) Small oblong of sanded card gummed to apex: after 

 15 h. deflected 90° from the perpendicular and from the card : 

 in the course of the three following days the terminal portion 

 became much contorted and ultimately coiled into a helix. 



(35.) Square of card gummed to apex: after 9 h. deflected from 

 card : after 24 h. from' time of attachment greatly deflected 

 obliquely and partly in opposition to Sachs' curvature. 



(36.) Small piece of card, rather less than -^'oth of an inch 

 square, gummed to apex : in 9 h. considerably deflected from 

 card and in opposition to Sachs' curvature ; after 24 h. greatly 

 deflected in the same direction. After an additional day the 

 extreme tip was curved towards the card. 



(37.) Square of card, gummed to apex in front, caused after 

 8 h. 30 m. hardly any effect ; refixed fresh square laterally, after 

 15 h. deflected almost 90° from the perpendicular and from the 

 card. After 2 additional days deflection much reduced. 



(38.) Square of card gummed to apex : after 9 h. much deflec- 

 tion, which after 24 h. from time of fixing increased to nearly 

 90°. After an additional day terminal portion was curled into 

 a loop, and on the following day into a helix. 



(39.) Small oblong piece of card gummed to apex, nearly in 

 front, but a little to one side ; in 9 h. slightly deflected in the 

 direction of Sachs' curvature, but rather obliquely, and to 

 side opposite to card. Next day more curved in the same 

 direction, and after 2 additional days ceiled into a ring. 



