Collingwood - JH thanks WW on behalf of Margaret Herschel 'for your very pretty and portable quintessence of Philosophy' [Indications of the Creator, 1845]. JH is critical of WW producing a brief expose of his thicker volumes - the cream without 'the solid and strengthening food'.
JH would have written earlier regarding WW's invitation for Margaret Herschel and their daughter to stay at Trinity Lodge in June, but he wanted to consult 'my better half' first. Margaret will write personally to Cordelia to confirm matters but he does not think his daughter will go: 'she is not yet more than 14 and is not yet published (come out) so that her mamma thinks it will not be expedient to bring her'. If 'Hopkins would not so horribly darken his meaning by atrocious formula which he sheds abroad like a cutter fish his cut in the sea - I should say that he has put the sliding theory in a decenter aspect than it seemed to stand'.
London - WW gives his positive opinion of John Herschel's recent bride [Margaret Herschel]. WW was safely elected to the University Club [see WW to RJ, 19 Feb. 1829]. He has 'been putting on paper and reading at the Philosophical Society my mathematico-politico-economics, and I am really rather pleased with the look of my lucubrations. I shall privately have it finished (as one of our papers) and send it to the Economists whom I know by way of challenge. It does not much interfere with your speculations but I know very much that it will bear traces of what I have learnt from you, especially in the boldness with which I doubt the accuracy of the orthodox economists. It is in fact for the most part Thompson's [Thomas Perronet Thompson] book on Rent translated into formula' ['The True Theory of Rent, in Opposition to Mr. Ricardo and Others', 1826]. WW's 'object is to shew the mode of applying mathematics so as to separate difficulties of calculation from difficulties of moral reasoning - to keep apart the business of reasoning up to principles and down from them'. He wants some statements concerned with land, produce and rent: 'I have told you I do not want accuracy but definiteness'.
Collingwood - Margaret Herschel has just sent a letter to confirm their revised visiting plans to Cordelia Whewell at an incomplete address, hence JH writes to make sure she gets the message. There should be a meeting of the magnetic committee before the BAAS gathering to finalise discussions and come to some conclusion.
Margaret and John Herschel congratulating WW on his engagement to Cordelia Marshall.
Trinity College - WW met John and Margaret Herschel in London - 'a great pleasure to me, as it always is; and the unhappiness of parting with him is almost done away with by looking at the views and feelings with which he goes and the temper in which she accompanies him' [their departure to the Cape of Good Hope]. WW would like to talk to RJ about his 'project of resigning the tuition of which I have spoken to you before. My wish to do so grows upon me - the business remains as tiresome as ever'.