skip to content

Darwin Correspondence Project

From James Torbitt   30 April 1879

Belfast

30th April 1879

Charles Darwin Esqr. | Down.

My dear Sir.

With profound respect, if anything could stimulate me to energetic action it would be your approval, but I have no energy, only some tenacity of purpose.

To report—I have had an account of my experiments published, have got rid of the varieties of 1875, excepting a few which are too good to be destroyed, these and the crossed varieties of 1877/8 I have planted to the extent of ten acres.1

The varieties of last season (1878) crossed in the second generation, are now growing healthily from selected heaviest and largest seed, and I am at present pricking out from the seed beds into boxes 7000 of the most vigorous. For cost of these your remittance is amply sufficient, I having had all the appliances necessary for their growth on hand previously2   I am pushing the principle of selection much farther, and protecting the seedlings more carefully than ever before:

On yesterday I had the honor and the pleasure to send to you some specimens—first a whole variety of last season once crossed—second some tubers of a once crossed variety of 1877 which seems to be good—third a few tubers of a variety of 1876, not known whether crossed or not, this variety is exceedingly strong in the stems and produces tubers of the size of the specimens, the “runner” then continues a few inches beyond this tuber (not through it, the tuber being evidently an enlargement of the runner) and produces a second tuber of about an inch in diameter, and in every instance which I have observed the first tubers have been free from the parasite and in many instances the second tubers have been infested.3 Of the varieties of 1877 I have many like this.

Lastly in the large bags are two differentiated specimens of one variety of 1875 marked respectively Black 75 No 1 and Black 75 No 2, with a description of the behaviour of which, I shall venture to trouble you tomorrow, and I am satisfied it will be found interesting, at least as being curious.4

I am My dear Sir | Most respectfully & faithfully yours | James Torbitt

CD note:5

My dear Sir— | I am very [pencil above del pencil ‘hearty’] glad to hear a good report of your experiments; & I shall *some time [transposed from after ‘see’ pencil] like to see your published report. I have no practical [interl] knowledge [‘of’ del ] about potatoes but the specimens which you have sent seem to me very fine & healthy.— *(The curious case) [square brackets in ms] *about the [black var seems very] & I suppose was [6 words illeg] the crossing. I presume the [‘great’ del ] extraordinary variation from the tubers is from the true crossed parents [added pencil before del pencil ‘Bees very surprising’] | bud-variation [pencil] | I will plant— Kew no use.— *It wd be no use to send the specimens to Kew. [pencil] | I have been working rather too hard of late & leave home on Tuesday for 3 weeks for some rest & therefore [4 words illeg] 5th | No one can wish [ ‘you’ del] more *more heartily for your complete success [pencil below del pencil ‘success’] than I do

Footnotes

Torbitt was attempting to produce a blight-resistant potato; he destroyed his earlier seeds because he believed that even healthy varieties tended to degenerate after a few years (see Correspondence vol. 26, second letter from James Torbitt, 24 March 1878; DeArce 2008, pp. 209 and 211). He published an account of his experiments in the Field in March 1879 (Torbitt 1879).
CD had funded some of Torbitt’s experiments in 1878 (see Correspondence vol. 26, letter from James Torbitt, 3 April 1878).
The potato-blight fungus, Phytophthora infestans, infects the leaves of the potato before moving down to the tubers.
On the Black 75 potato, see the memorandum from James Torbitt, 1 May 1879.
CD’s note is a draft of his reply (letter to James Torbitt, 3 May 1879).

Bibliography

DeArce, Miguel. 2008. Correspondence of Charles Darwin on James Torbitt’s project to breed blight-resistant potatoes. Archives of Natural History 35: 208–22.

Torbitt, James. 1879. Cultivation of the potato. Field, 8 March 1879, p. 272.

Summary

Has had an account of his experiments published. Sends CD some specimens of seedlings and tubers.

Letter details

Letter no.
DCP-LETT-12020
From
James Torbitt
To
Charles Robert Darwin
Sent from
Belfast
Source of text
DAR 178: 152
Physical description
ALS 4pp

Please cite as

Darwin Correspondence Project, “Letter no. 12020,” accessed on 20 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-12020.xml

letter