K. S. FINLOW AND I. H. BURKILL. 75 



green ; though, under a microscope, a few reel cells may be 

 detected, in a red race, at the points where the blade and petiole 

 of the cotyledons join. The pigment becomes obvious, later, 

 when it diffuses over the surface of the epicotyl and is visible, if 

 the race be a red one, on the petiole and on the margin of the 

 Hrst leaf after the cotyledons. Succeeding leaves show still more 

 red ; and the epicotyl, stenj, and petioles grov^- redder. This 

 change we shall illustrate by two counts made of the progeny of 

 plants 11 'J and 214 (what these plants were will be obvious later) : 

 the plants counted were a mixed series grown in two lines : they 

 were examined carefully Avhen a fortnight old and classed into 

 '•red stemmed," " pale red stemmed," " green stemmed with red 

 petioles " and '• pure green " : they were examined again and 

 reclassed when a month old. In the meantime a few belated 

 seeds had germinated, altering the total slightly. 



The figures suggest that approximately 1U2 plants, classed 

 as pale red stemmed at the first counting, had become distinctly 

 red at the later counting ; 155 plants classed as having only red 

 petioles at the first counting had become pale red at the later 

 counting, and 14 more plants had been added to the red series, 

 either from those considered to be green at the first count ; or, 

 from the 20 new germinations. 



The lesson learned from this is that, in order to determine 

 how many red and how man}' green plants there may be in a bed, 

 it is necessary to wait until the plants have had time to declare 

 themselves. 



In 190G {vide tlie " Journal of the Asiatic Society of Bengal," 

 N. S. II, pp. 515-519) one of us (I. H. B.) gave an account of 

 the jute flower, showing it to be self-fertile and self-pollinated, but 

 that insect visitors go to it. The structure of the flower is such, 

 we shewed, that, unless foreign pollen is prepotent, self-fertiliza- 

 tion is not unlikely to result from an insect visit. It was necessary 

 however to have more positive evidence on this point, wheii 



