|Alternative reference number||NLB/11 p470|
|Title||Copy letter from Herbert Rix, to Professor W H [Walter Noel] Hartley, Fellow of the Royal Society|
|Date||8 November 1895|
|Description||The Society is proceeding with [Carl Johan] Lundstrom's paper. The engravers ask to be supplied with a negative or silver print of the spectrum plate. Asks if this can be obtained either from Hartley or Professor Lundstrom. |
Rix is not sure if the illustration is done from an original photograph or from a photograph of a drawing; if the latter, perhaps a good shaded woodcut would serve the purpose. Asks to know Hartley's opinion on this.