CD finds the case of Muraltia with irritable stamens curious.
Thanks JPMW for his help with expression queries and would be grateful for any more information. Believes the action of the so-called "grief muscles" is a result of combined action of two muscles.
Down. | Bromley. | Kent. S.E.
My dear Sir
I thank you cordially for all your kindness. The case of the Muraltia, which you describe & figure so clearly is very curious; & I quite agree with you, the case is especially curious in the resemblance of the movement of the stamens to those in papilionaceous plants. I doubt whether the movement, at least in the latter, is due to irritability, nor is it a case of simple elasticity. The resemblance of your Muraltia to a heath, of which I believe there are other cases at the Cape is curious. I have formerly examined, but with no great care, our English Polygola & convinced myself that its fertilization depended on insects.
You have been extremely kind in taking such great trouble about expression, which is a
subject that interests me to an unreasonable degree. That I sh
Thank you for telling me about the children pouting,—a gesture which I hear
from N. America is common to Indian children. I shall
be most grateful for any further trustworthy information. I believe the French are quite
wrong in speaking of a ``grief muscle''; the movement apparently results from a
combined action of the upper orbicular & that part of the frontal muscle which
is seated above the inner angle of the eyebrows. I enclose a
poor photograph of a young woman who c
When I rec
With very sincere thanks | I remain my dear Sir | yours very faithfully | Charles Darwin
- f1 5617.f1The year is established by the relationship between this letter and the letter from J. P. M. Weale, 7 July 1867.
- f2 5617.f2Weale had sent CD's handwritten set of queries on expression to several people in the Cape Colony (see letter from J. P. M. Weale, 7 July 1867 and n. 5.
- f3 5617.f3Weale's observation on the resemblance of Muraltia to a heath was evidently in the section of his letter that was later excised (see letter from J. P. M. Weale, 7 July 1867 and n. 13).
- f4 5617.f4Polygala and Muraltia are both members of the family Polygalaceae (milkworts; characterised in Lindley 1853 as an order) in the order Fabales.
- f5 5617.f5Weale enclosed answers to CD's set of queries on expression written by Christian Gaika, whom Weale described as a brother of Chief Sandile (see letter from J. P. M. Weale, 7 July 1867 and n. 6).
- f6 5617.f6CD may refer to information from Joseph Trimble Rothrock on children of tribes living in the Nass river area of western British Columbia, Canada (see letter from J. T. Rothrock to Asa Gray, 31 March 1867).
- f7 5617.f7CD introduced the phrase `grief-muscles' to refer to the combined action of these muscles (Expression, p. 181; see letter from J. P. M. Weale, 7 July 1867 and n. 7).
- f8 5617.f8The enclosure has not been found, but see Expression, p. 180 and Plate II, figure 3 (facing p. 178) for the published version of the photograph.
- f9 5617.f9Weale had enclosed a packet of locust dung with his letter of 7 July 1867. For the results of CD's experiments, see the letter to Asa Gray, 16 October .