On THH’s Lectures to working men.

Work by Ferdinand J. Cohn on the contractile tissue of plants ["Über contractile Gewebe im Pflanzenreich" Abh. Schlesischen Ges. Vaterl. Cult. 1 (1861)] seems important. CD has come to the conclusion that there must be some substance in plants analogous to the supposed diffused nervous matter in lower animals.

[Part of P.S. missing from original.]

Apologises for passing on what he agrees were offensive remarks in V. Lushington’s letter. Has told VL he had no right to make them. Asks THH to make allowance for red-hot disciples defending the master.

Delighted with THH’s review [in Academy (1869)] of Haeckel’s [Natürliche] Schöpfungsgeschichte [1868],

but groans about THH’s view of rudimentary organs. Cites Origin and Variation.

Affected by THH’s letter – will send a copy to the other 17 friends. Hopes for his and public’s sake his health will improve.

CD believes Playfair’s bill would not restrict demonstrations under anaesthetic.