[388]

Tomato dark

Horizontal glass

Oct 24'

Nutation of axis

Solanum lycopersicum

Solanum Lycopersicum

Left- Hand

            Right Hand

Older Plant magnified less

            Younger Plant

8°. 10   8°. 10'

9   to light & left         9' from light & right

9 35 to right & light    9 35 to left & light

10. 2   little to left

{

10° 3' new dot, more magnified         10. 2 from light & to right

10' 3 new dot

10. 38 . to right & light           10 .38 to light & lilt to left

11. 6 from light & to left        11° 6 to left & little from light

11. 37' to light & crossed old line      11. 37 to light & lilt to left

12 to light & left         12° to light (sinking?)

12 50 Crossed right-hand figure         12 50' to right & from light

slided Pot & glass

(Used)

12. 53  12. 53'

1. 40 from light           1, 40 to light

2. 25 to light & left     2. 25 to light & right

3' to a very little bit to light     3°. back from light

3 30 to light longish way        3 30 to light & to right.

4°   very little way to light   4°— to light & left

4 37 long way same course to lg        4° 37 to left & light

5. 3   back from light  5 3 to left across other diagram

3 time to wad light 3 time down in 7 Hours

up thrice there twice Thrice down or stem has in— 7. Hours

Leonard

(Distance from glass to mark below 10 7/8    Distance from glass to mark below 10 6/8

(—— from end of bristle to mark   ⨀            —— from end of Bristle to mark   ⨀

Diagram A

Diagram B

Which is

            older Plant

35.1 times.       

44.8 times

[388v]

(49A 54

Ch. 8

*(24) Footnote to p. 49

In some other members of the Duck Family the speculum in the two sexes differs in a greater degree, but I have not been able to discover whether its full development occurs later in life in the males of such species than in the male of the common duck, as ought to be the case according to our rule.

With the allied Mergus cucullatus we have however a case of their kind: the two sexes differ conspicuously in general plumage, & to a considerable degree in the speculum, which is pure white in the male, & greyish-white in the female. Now the young males at first resemble in all respects the female & have a greyish-white speculum; but this became pure white before the other more strongly marked sexual difference in plumage are required by thr adult male: see Audubon, Ornithological biography vol. III 1835 p 249-250.─

[Descent 1: 291, n29: "In some other species of the Duck Family the speculum in the two sexes differs in a greater degree; but I have not been able to discover whether its full development occurs later in life in the males of such species, than in the male of the common duck, as ought to be the case according to our rule. With the allied Mergus cucullatus we have, however, a case of this kind: the two sexes differ conspicuously in general plumage, and to a considerable degree in the speculum, which is pure white in the male and greyish-white in the female. Now the young males at first resemble, in all respects, the female, and have a greyish-white speculum, but this becomes pure white at an earlier age than that at which the adult male acquires his other more strongly-marked sexual differences in plumage: see Audubon, 'Ornithological Biography,' vol. iii. 1835, p. 249-250." speculum: A lustrous mark on the wings of certain birds. OED. ]

Audubon, John James. 1831-1839. Ornithological biography, or an account of the habits of the birds of the United States of America; accompanied by descriptions of the objects represented in the work entitled The Birds of America, and interspersed with delineations of American scenery and manners. 5 vols. Edinburgh: Adam Black. [on Beagle] CUL-DAR.LIB.14 vol. 1 link PDF vol. 2 PDF vol. 3 PDF vol. 4 PDF vol. 5 PDF