(1

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

All affixed at Ap. 25th 5° P.m

8° 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' 5° 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.

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

My 26' 8° 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 7° 50' a fresh set if 12 radicles, all except (3) contorted & unhealthy, fixed large piece of sand-paper with thick gum on them.

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

Jun 11' 9°. 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.—

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

12th 8° 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.— 4° 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 8° a.m (1) now straight (2) bowed toward card. (3) bowed from card.

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

(4) 5° 15 still straight

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

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

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

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

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

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