Reginald Tuffley Harding (1870-1917), aged 13, writes at the behest of his father to a Mr. Hamel providing instructions of how to construct a bichromate battery (i.e. a chromatic acid cell) in a long-neck bottle, with details of the materials required and from where they can be purchased. The notepaper is headed Rugby School. E.A. Scott’s Esq.’- that of Harding’s house master Edward Ashley Scott. This implies that perhaps Scott was instrumental in assisting the boy with this information. This letter is most informative on its recommended use of vacuum bulbs to produce electric light.