(1

Radishes radicles with bits of sand-paper very small with shell-lac to tips off

All affixed at Ap. 25th 5º P.m

8º 15' a.m Ap 26th

(1) decidedly curved more than right-angles from card & from gravity ✔

(2) curved at right-angles to gravity, but cannot be said to be curved from card. O

(3) short radicle I think not affected O

So difficult to fix them & grow irregularly & seem to turn up to damp— cork lid in the [illeg] of

(4) perhaps very slightly curved from card /

(5) whole root slopes from card /

(6) completely Hooked from card, rather large piece of card ✔

(7) quite straight O

(8) a little sloped from card.

Two splendid cases — 2 not affected — other 4 doubtfully sloping from card.—

(2

Radicles of Radishes.

May 25' 5º 15' P.m seeds on zinc plate with Holes; bad plan for radicles often touched edge & curled up at right angles under plate, showing apparently irritable— Several grew nearly straight.

5º 15' P.m affixed with shell-lac square of sand paper of various sizes to apices of 10 Radicles.—

My 26' 8º a.m. I can see no clear effect. 2 or 3 with tips bent to Card — one or two from card — one bent at right angle irrespectively of position of card & of irritation from zinc Plate

The Zinc Plate a very bad plan—

27th I am now well convinced that radicles turn up to damp zinc Plate, nearly all have turned up— cards hardly any or no effect— I doubt now about edges of zinc irritating root

(3

Radishes, Radicles

Jun 8th 7º 50' a fresh set if 12 radicles, all except (3) contorted & unhealthy, fixed large piece of sand-paper with thick gum on them.

9th 8º 15 so contorted, can tell nothing, I think act

Jun 11' 9º. 15 6 radicles with square of sand-paper & shell-lac

Seeds germinated in water pinned to cork; many crooked, & the best grown had grown out horizontally, in water as if geotropism did not act in water!! An almost useless trial this— mostly rather large squares of sand-paper.—

4º. 30' P.m. 3 long radicles placed in air, damp are now upturned from gravity so as to touch the cork above.

12th 8º 30' am, another long radicle bowed up to cork-roof; the tips of other are now beginning to obey geotropism.— one not affected; another slightly— The remainder of seeds on the cork to which cards not attached have grown very crooked & are more or less monstrous.— Certainly this case indicates, as far as can be trusted, that tips are sensitive.

Consider all evidence

[195v]

Radicles of radishes

1878 June 7 6th 8a 12 radicles with sand-paper & shell lac on tips on dry cork. in passage. — many crooked radicle thrown away.— 4º 30' P.m. 2 of the r. excessively contorted, but I can see no evidence of bending from squares.

7th 8' a.m (1) (2) (3) a little turned from card

8th 8º a.m (1) now straight (2) bowed toward card. (3) bowed from card.

(4) (5) do not turned (5) 5º 15' P.m is now turned from card

(4) 5º 15 still straight

June 8th 8º a.m. still straight (5) 8th 8º a.m much bowed from card

(6) do Hooked upwards from card (removed) [sketch]

(7) do straight (left) (5º 15 still straight.) 8th. 8º a.m still straight.

(8) whole radicle inclined from card → [sketch]

(9) straight slightly inclined from card (left) (5º. 15' still inclined) 8th 8º a.m still slight inclined from card

10 greatly contorted, but whether from action of card doubtful [sketch]