146 PLANT PHYSIOLOGY 



I. 2, for affects successively read is continuously passing round to 



II. 38-9, for base to the apex, read apex to the base, 

 1. 49, for (1903 a) had read (1903) has 



I. 52, for side only a short distance away read side for only a short stretch 



490, 11. 37-8, for placed in position simply by read merely stirred by 



491, 1. 2, for fix bodies to read hold firmly 



II. 26-9, for The tendril ... to them, read It is not, however, usual that 

 repeated contact is a condition of stimulation ; a single contact, which indeed 

 certainly always consists of several individual stimuli, induces this result, if 

 the contact be sufficiently vigorous. 



11. 53-5, for Still it must ... so that read Since, however, these ' pits ' 

 occur only in Cucurbitaceae and Sapindaceae, while, on the other hand, the 

 tendrils of Passiflora, in spite of the absence of such arrangements, are ex- 

 tremely sensitive, 



492, 1. 8, after to say. read HABERLANDT'S view apparently is that mechanical 

 bending of the tendril is not operative, because the tangential tensions, which 

 arise in consequence, are too feeble. The illustration on which he bases his 

 argument is not, however, very satisfactory. As a matter of fact, it is possible 

 to bend the tendrils much further and to induce, therefore, much greater 

 tangential tensions without any response ensuing (FITTING, MS.). 



I. 19, after stimuli read ; FITTING has also obtained response by wounding. 



II. 23-5, for curvatures due . . . wild state, read curving is the only kind 

 of reaction which tendrils exhibit. 



I. 30, for (1903 a) read (1903) 



494, 11. 7-11, delete It is very . . . present case. 



II. 15-16, for in an effort . . . instance in read in the preliminaries to cur- 

 vature, in the mere tension of the parts concerned, and not be due only to 



1. 46, for proximately read proximally 



I. 57 P. 495, 1. i, delete which are . . . support. 



495, 1. 18, after region.] read The cause of this phenomenon is not quite 

 clear. It does not depend, at all events, on the strain to which the tendril 

 is subjected, but is in some way or another caused by the twining round the 

 support. 



497, 1. 12, after concentrate, read Fig. 156 (left) shows the result of a single 

 eccentric stimulation. 



II. 25-6, for In all these . . . tendrils, read In this respect Drosera differs 

 from a tendril, for in the latter case a single contact is sufficient, but that 

 contact consists of numerous single stimuli. 



498, 11. 4-8, for found that many . . . were first digested read many that 

 were obviously neither useful nor harmful to the leaf, and, on the other hand, 

 some that were well-known poisons, e. g. sublimate, and finally nutrients 

 also, which, like ammonium salts or phosphates, were absorbed at once, or 

 which, like proteid and proteinaceous animal compounds, had to be first 

 digested 



1. 30, for movements . . . take place read movement increases markedly 



I. 43, for i.e. in read which is 



II. 45-9, for and we further . . . tentacles, read moreover, the aggregation 

 occurs also in Drosophyllum, where no curving movements take place. It is 

 worthy of note that, according to DARWIN, aggregations, though certainly 

 much feebler in character, occur in decapitated tentacles ; PFEFFER assumes 

 that this aggregation is transmitted from a directly stimulated tentacle. The 

 question requires reinvestigation. 



