ABSTRACT

You will remember, from the conversation which we have had together, that I think it is a matter of duty and gratitude on my part to do what I can for the good of the Royal Institution in the present attempt to establish it securely. The

Institution has been a source of knowledge and pleasure to me for the last fourteen years, and though it does not pay

me in salary for what I now strive to do for it, yet I possess the kind feelings & good will of its Authorities & members, all the privileges it can grant (or I require) and moreover, I remember the protection it has afforded me during the past years of my scientific life.