Calls public attention to an inexpensive process JH devised in 1838 to eliminate noxious acid fumes coming from manufacturers of soda.

Thanks for Orchids.

Has captured a bee with pollinia adhering to its head. Will send it to CD if he likes.

Thanks CD for his book [Orchids]. CD has opened a new field for observation and a new unexpected track to explore phenomena that had before appeared "irreconcilable with ordinary opinion and method shown in the organic world".

Yellow anthers of Heterocentron produce on the same plant thrice as many seeds as the crimson anthers. Crimson anther seeds produce dwarf plants, others rise high up. Monochaetum ensiferum facts are still more strange. Wants to investigate the case, and asks for a plant of the Melastomataceae just before flowering.

Has JDH a Rhododendron boothii from Bhutan with pistil bent the wrong way?

No summary available.

Thanks for Orchids.

"The big book [Variation] will no doubt go on again now."

JL is writing on Somme implements ["Evidence of antiquity of man", Nat. Hist. Rev. n.s. 2 (1862): 244–69].

Thanks for Orchids.

Thanks for the book [Orchids].

Found thousands of Ophrys aranifera plants.

Sends drawings of masses of ice that fell in the neighborhood on the 7th. Would like drawings returned to deposit them in the museum. Hopes grandchildren reached Collingwood safely.

Sends CD a quotation from Plato which anticipates the Origin.

Has been enjoying CD’s paper on dimorphism in the Journal of the Linnean Society ["Two forms of Primula", Collected papers 2: 45–63]. He has found similar structures [see Forms of flowers, pp. 116, 122].

Has dissected Leschenaultia biloba flowers. Finds no stigmatic surface in the indusium. Describes what is the apparent stigma but has found no pollen-tubes to confirm it as the real one.

Thinks application of heat will not harm carbonate of lead crystal, and urges JH to 'boil, torture, or otherwise put it to the question in whatever way' JH sees fit.

Thanks CD for his book [Orchids].

Comments on presentation copy of Orchids. Has CD studied the orchid Sobralia?

Cannot get material for hollyhock experiment.

Sends his notes on Primula sinensis.

He is experimenting on Ranunculus.

Thanks WDF for interesting letter about turkeys. Would be grateful for information on fertility of the hybrids.

Discusses Leschenaultia, finds no stigmatic surface in the indusium.

Gives information on where to obtain paper for drying plants and where to obtain a microscope.

No summary available.

Thanks for Orchids.

Has received first sheets of Orchids and is very impressed. "What a skill & genius you have for these researches."

Details of U. S. orchids.

Leschenaultia seems very odd. Will try with pollen left on for 48 hours. Illustrates diversity of structures for same purpose.

Bentham’s and Oliver’s good opinion of Orchids is reassuring.

Anxious to experiment on Melastomataceae; thinks it will give important results.

Wants Leschenaultia formosa to try whether viscid outside surface can be fertilised.