Dear Jenyns

I am very much obliged for the capital little almanack;¹ it so happened that I was wishing for one to keep in my portfolio. I had never seen this kind before & shall certainly get one pro futuro. I think it is very amusing to have a list before one’s eyes, of the order of appearance of the plants & animals around one: it gives a fresh interest to each fine day.—² There is one point, I sh^d like to see a little improved, viz the correction for the clock at shorter intervals: most people, I suspect, who like myself, have dials, will wish to be more precise,, than with a margin of three minutes. I always buy a 1^s almanack for this sole end.—³

By the way your ie. V. Vorst⁴ almanack’s is very dear; it ought, at least, to be advertised post-free for the 1^s.— Do you not think a table, (not rules) of conversion of French into English measures & perhaps weights w^d. be exceedingly useful.—also centi-grade into Fahr.—magnifying powers according to focal distances— in fact you might make it the most useful publication of the age.—

I know what I sh^d like best of all, namely current metereolog. remarks for each month, with statement of average course of winds & prediction of weather in accordance with movements of the Barometer. People, I think, are always amused at knowing the extremes & means of temp. for corresponding times in other years.—

I hope you will go on with it another year.—

With many thanks, my dear Jenyns. | Yours very truly | C. Darwin