Thanks AD for having pointed out an error in one of JH's papers.
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Thanks AD for having pointed out an error in one of JH's papers.
Thanks AD for a correction in one of JH's writings; tries to explain the partial echo that occurs when blowing across the end of an open pipe.
Thanks AD for his theorems; comments on the value of such abstract speculations.
Thanks AD for the corrections to JH's writing on astronomy; congratulates AD on his book on differential calculus.
Wants to set up a benefit club; for mutual insurance of artisans, etc., and is asking AD for actuarial information.
Questions about actuarial information in AD's 1844-1-30.
On poor attendance at R.A.S. dinner, and on the results of unrestricted population growth.
Details of printing the policy for the benefit society.
More details of the benefit society.
More details of the benefit society.
More details of the benefit society.
Discussion of actuarial tables for the benefit society.
Under pressure of time, JH is anxious to resolve the question of appropriate actuarial tables.
Corrections to the actuarial tables.
Further emendations regarding printing the policy of the benefit society.
Thanks for all the help with the benefit society material.
The benefit society is launched and all is well.
Forwards a copy of the rules and regulations of the benefit society, with much thanks.
Has sent some of AD's algebra papers to Mary Somerville; comments on death of Francis Baily.
Sends a list of James Dunlop's nebulae.