PAGE 



PREFACE vii 



ERRATA 



Page 34 ; line 5. For " Separates it " read " Separates the 

 foliage." 



Page 57 ; line 1. For " 2,000 " and " 40 " read " 200 " 

 and " 400." 



Page 95 ; line 2. For " 15 and 5 " rearf " 5 and 15." 



Page 98 ; line 5. For " points are " read " points is." 



Page 119; fig. 31. For " controsphere " read " centro- 

 sphere." 



Page 148 ; line 29. For " Gynostemium " read " Gymnos- 

 temium." 



Page 169 ; line 20. For " SO 4 " read " SO 3 ." 



Page 172. Inverted commas should commence on line 

 30, after " subject." 



Page 173 ; line 20. For " to the lower thigh-bone " read 

 " to the leg bone." Line 28 : For " upper and lower thigh- 

 bones " read " upper and lower bones." 



REVIEW OF ELECTRO-PHYSIOLOGICAL xtESEARCH 49 

 CAUSES WHICH HAVE CONTRIBUTED TO ERROR 54 



