36 autograph dated letters from Tyndall to various correspondents

Signed (except no.10, which is in the third person).

Including nos.18a and 20a.

Correspondents include the Prince of Mantua and Montferrat (no.28) and James Croll (no.8), the latter in reply to a letter from Croll now held at the Royal Institution. No.9 is probably to the Rev. J.E. Kemp, the evidence being in material held at the Royal Institution 9Rev J E Kemp (Tyndall Journal VIIIa p394-5 and Typescript Journal RI MS JT/2/13c p1319).

Chronological, with one exception: no.29 has subsequently been dated by Professor Roland Jackson to 1854, and thus its chronological position should actually be before no.1.