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Oxalis acetosella (dripping)

Sept 14th 9˚ 5' put on leaflet under drip on plant in pot. — drip has fall of 10 1/2 inches drops rather large

Sept 15. 8˚ 7˚ 15 signs of infiltration. 12˚ certainly several infiltrated spots.

Sept. 16 — infiltrated spots have increased

Sept 18' 8˚ several spaces infiltrated & quite transparent, every trace of chlorophyll having disappeared— marked leaflet red wool

Sept 19th 11˚. The places which were quite transparent now brown. — the surrounding parts paler— green, but I think chlorophyll reforming.)

(Sept. 20th 10˚ 45' put another leaf under the drip.

21' 10˚ dark spots on leaflets, where water has infiltrated. —

Sept 22d 8˚ now some brown marks.

Sept 23' 8˚ examined leaf several places colourless & transparent to naked eye or lens, but these viewed under high power show chlorophyll granules of palest green, sometimes tinged with pale brown, & where the browness browness is well marked the spot looks brown to naked eye & is evidently dead. The change is not in the epidermis, but beneath it.

In the midst of the transparent spots, here & there a few cells retain a fairly bright green tint & perfect granules green. The pale Ch. granules are have enlarged with outlines much less distinct & somehow sometimes almost blended together. (over)

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continued

With highest power in some cells all traces of Ch granules gone & only very pla pale greenish-brown pulpy matter left & cells themselves collapsed, — Altogether 6 semi-transparent spots. —