Thanks AD for having pointed out an error in one of JH's papers.
Thanks AD for having pointed out an error in one of JH's papers.
Possible to purchase 12 postage covers for 11d in the Strand. Points out an apparent error in one of JH's books on sound. How does an open pipe vibrate? Regarding the private character of J. L. Lagrange.
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.
Regarding JH's telescope. Includes a rhyme on it.
Thanks AD for his theorems; comments on the value of such abstract speculations.
Points out an error JH has made concerning J. E. Bode's law. What is the proper notation for the satellites?
Thanks AD for the corrections to JH's writing on astronomy; congratulates AD on his book on differential calculus.
Thanks for the gift of the book. Thomas Longman is now the editor of Lardner's Cyclopaedia. Latitude of the pole star incorrect in Charles Knight's publications. Regarding truth.
Thanks for his reductions of Schiller's observations. Many people believe the claims made in the 'Moon Hoax'. Is writing a book on the use of the globes.
Sending two formulae.
Wants to set up a benefit club; for mutual insurance of artisans, etc., and is asking AD for actuarial information.
Regarding the workings of Insurance Companies and Benefit Societies. Recommends an actuary. Hopes JH will come down for the Anniversary meeting.
Questions about actuarial information in AD's 1844-1-30.
Has just had a tract on Friendly Societies from J. W. Woolgar. Answers some queries regarding the work of such societies.
All the tables in Charles Ansell's work are expressed in decimals. Gives advice on type of insurance for sickness and death. Regarding the true inventor of J. E. Bode's law. Very few at the Anniversary dinner.
On poor attendance at R.A.S. dinner, and on the results of unrestricted population growth.
Advice on how to start a Friendly Society. Calculated the sun's pull on the Earth.
Details of printing the policy for the benefit society.
More details of the benefit society.
More details of the benefit society.