[134]

Feb 2d Nut. (another & older sp

Filament attached .35 above ground.— Seedling now neary straight & .85 high

[Sketch] how high above ground fixed beneath scale-like leaves

8°. 55' 

9 40 very little way to light   

10. 35 to the    right   

11. 25 to left  

12. 15   to light very short distance

1°. 10   from light       Distance of mark .38

2. 20 to left     Total distance   10.4

3' to right so back       magnified 27. 37 nearly 28 times

4 . 5 same course       

5 35 from light           

6 20 almost same spot an atom to light         

7 34 from light           

8 53 to left & little to light    

10 40 little way to left & from light  

Feb 3d 6 50 to the right         

8 23 nearly same spot

8° 47 new dot on new glass — all in same position  

9. 5 from light

9 55   do       7° 30 to light

10. 35 same course very short distance          8. 30 to right

11 35 to light gone right back            9. 40 to left on old line high up

12. 18 a little from light on last lines 10 40 far to left & from light

1. 3 to right     7°. a.m. Feb 4th

2. 5 from light 7. 50'

3. 5 to light    

4. 5 almost same spot 

5 20 from light           

5 57 to right   

[134v]

it is proved that one form of a species is not fully fertile not except only when it is by is fertilised with pollen from another form, we have not perfectly completely reliable [evi]dence that if the species is heterostyled. But when the pistils & stamens differ in length in different two or three sets of individuals, & this is accompanied by a difference in the size of the pollen-grains or in the state of the stigma, we may infer with much safety that the species is heterostyled. I have, however, occasionally trusted solely to a difference between the two forms in the length of the pistil.

[Forms of flowers, p. 3: "Unless it be proved that one form is fully fertile only when it is fertilised with pollen from another form, we have not complete evidence that the species is heterostyled. But when the pistils and stamens differ in length in two or three sets of individuals, and this is accompanied by a difference in the size of the pollen-grains or in the state of the stigma, we may infer with much safety that the species is heterostyled. I have, however, occasionally trusted to a difference between the two forms in the length of the pistil alone, or in the length of the stigma together with its more or less papillose condition; and in one instance differences of this kind have been proved by trials made on the fertility of the two forms, to be sufficient evidence."]