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furnished with glandular hairs & treated this with a weak solution of carbonate of ammonia. I used this salt because, as we have seen with Drosera, it causes the segregation of the fluid contents of the cells of with such remarkable extraordinary rapidity, & thus it's the act of absorption can com be promptly [illeg].

(Saxifraga are closely allied to Drosera, & therefore are particularly [illeg] deserving of an observation under our present point of view. (The flower foot-stalk of the flowers & leaves of Saxifraga umbrosa are [illeg] clothed with short hairs, corresponding with many divided by partitions with cells, & being bearing glandular heads, ove formed of several polygonal cells. These latter cells & som contain pink fluid charged with granules or with larger spherical masses of pink bright pink matter: they secrete a yellowing viscid fluid, by which a considerable number of minute Diptera are sometimes caught generally by their wings or tarsi. The lower cells, also, of the hairs sometimes contain pink-coloured fluid.

A bent portion of the  a flower-stem, which still whilst attached to the plant, was immersed in a solution of C. of Ammonia (4 grains to the ounce) for 1° 30', & only a few of the glandular heads were discoloured. Another Another port stem was similarly immersed for 3° 45',

[See Insectivorous plants, p. 345.]

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given, it is been this to glands of St[illeg] Saxifraga absorb the [illeg] very slowly; very much more in consequently more slowly than those glands of Drosera.) they, however, almost it, however, more quickly than the exterior walls of the hairs, as shown by the [illeg] which the segregating process travels downwards.

(I also tore off slip strips of the mid; & with the attached hairs & immersed them in the same solution on examination under the microscope I first examined two hairs & examine some those & found all [illeg] the from cells of the hairs exactly those of the glandular [text excised] colourless transparent fluid. I

[bottom of page excised]

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On hairs  in their ordinary state [2 words illeg] which had not caught flies I never saw more than a small collection of granular matter produced at one end of the cells by the action of the solution. This seems to indicate that the content of the cells in had been previously affected by the absorption of matter from the capture insects; but we more evidence on this head is required.    We have to [pencil insertion illeg]

I also examined another species of Saxifraga (I believe S. rotundifolia) the flower-stalks of which was furnished with has longer pale-brown hairs on the  bearing flower stalks pale brown glandular heads. Bent & cut stems were immersed for 30m in the same solution of C. of Ammonia as before viz 4 grains to the ounce; & the glands became bright yellowish-green, & the [illeg] of contents of segregation had already proceeded down two or three of the cells close beneath the glands had already undergone segregation. become segregated.  It would, therefore, appear that the glands of this species absorb much more generally than those of S. umbrosa. I examined many of the hairs on the other flow stems of this plant, before immersion & they showed no trace of segregation. I also tore cut off [illeg] of the [illeg] with attached the stem, bearing glandular

[See Insectivorous plants, p. 348.]

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This led me to observe more examine carefully it in under a high power another piece of a flower-peduncle, which bore 25 short hairs & 9 long hairs. Of They the later the glandular heads fluid contents of the enlarged glands of the latter continued no granular colourless fluid with no g[illeg] of solid matter   no solid masses or globules of or semi-sold matter    : which of the whilst of the 25 shorter hairs the glands of only two did distinctly contained such such globules of such matter & the glands of other two or three showed obscure signs

I then examined this same piece of the flower — peduncle in the same solution of the carbonate & of the carbonate from 2°, & again examined it carefully. Now the gland of all all the 25 shorter hairs, with 2 or 3 the exception of two or three, contained [illeg] one large, or two largish, from 2 to 5 small   or from three to five spherical masses of semi solid matter. Of 3 of the glands the nine 9 long hairs, the glands of three three also [illeg] contained [illeg] & conspicuous [illeg] distinct – similar masses of a similar nature. (a)  Taking all Considering the 34 hairs at the [illeg] a mark conspicuous change   had been produced effected in their glands   ; & there could be no doubt that they had absorbed some of the Carbonate. of Ammonia. [2 words illeg]

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(Another piece of a young flower-peduncle was immersed for 2° 45', & after the glands of both the long & short hairs contained an abdomen of segregated spherical masses : the specimen was left for an additional period again immersed put into the solution,  so that altogether it was left immersed for 6° 15'; & now almost all the spherical masses within the globular glands had disappeared, & in their place that was granular matter of a darker brown tint. The white hairs with the exception of two or three of the basal had also cells become browner, owing to from owing to brown granular matter adhering to their walls. I repeated these experiments twice with nearly the same result; (a) )    but on one occasion the peduncles were left immersed for 8° 30', & even these all the [illeg] & very few of the spherical segregated masses [illeg] seems viscid but been connected like granular matter.

(I also examined under a high power the glandular The hairs on e a leaf, & the glands contained no segregated only limpid fluid. I then placed the leaf in the [illeg] solution of the Carbonate for only 30' & now many of the glands contained segregated spherical masses.)

(Some experiments were made with the vapour of dry Carbonate of Ammonia. I put a young flower-stalk placed a fine plant with cut-off end sealed up under a bell-glass with a pinch of the Carbonate, & in only 10m there was considerable segregation in the glands; & the

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; on one of these occasions I left a peduncle immersed for 8° 30', & although almost all the spherical segregated masses had disappeared & been converted into the brown brown granular matter, a very few had not been acted on.)

still remained.)

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under a large bell-glass with two grains of the carbonate in a watch glass on the supporting surface. After an interval of 2.h & 6h I examined portions of the flower-peduncles, but there was the hairs presented no segregation; in the hairs; though the truth of the  petal was slightly affected in tint. Nor was there any segregation after 24h & 48h : I have since suspected that the peduncle were too old, as I had previously experimented on peduncles those with two bearing flowers not full expanded. I then examined one of the leaves which overhung the edge of the pot. & had thus been fully exposed to the vapour; & I found the all the glandular filled with  heads of all the hairs had become of a   dark brown tint, evidently done to with the lining of the lower cells separated from the walls. These leaves, had [illeg], however, been had been somewhat injured, & on the following day were dead.)

(I then cut off a leaf, & sealed up the end, so that the cut surface should not absorb any of the vapour, & put the leaf it under a small glass. Together with a good-sized pinch of the dry carbonate in a watch-class. ∴ in a After an interval of only 10m. the leaf was examined: & the glands showed a considerable amount of segregation; & the