[61]

Carica papaya (Dec. 8th) Rootlets in sol. of 4 to 1000 of C. of A for 21° no action whatever; osmic a. (2 drops of 10 per cent sol. in watch-glass) blackened parts, but produced no other effect — no evidence of alternating rows with granular matter.

Taraxacum Dandelion growing on Dung-heap in C. of A. 4 to 1000 from Dec. 7 4° 30' P.m 18° to 10° 30' a.m Dec. 10th — no regular granular aggregation, but in thinner roots innumerable hyaline minute globules on walls of cells & in middle, & some confluent. Thick roots bluish — with small brown aggregations. (B) (Back)

Lamium purpureum (same sol. & same immersion as Taraxacum)

Tips of root brown owing to all cells having endless spheres, I suppose slightly brown. — Higher up I think some of the rows of cells, contributed fewer of the minute colourless hyaline globules, than other rows of cells, & perhaps root-hairs arise chiefly from the more empty cells— worth reexamining.— Dec. 11th slide was irrigated yesterday with the osmic a. — granules now brownish, heaped together. I think it is nearly certain where cells contain much of the brown granular matter ↘

[61v]

(B). (Dandelion—) osmic a. after water & no ammonia blackened whole of roots, but produced no particular changes — hyaline points rendered brown & granular.

(Lamium)

matter, then root-hairs do not arise, & there was great difference in different parts of roots (excluding the tips) in the amount of brown granular matter. Better say nothing about alternation of rows of cells