| Description | Understands from Sir W Huggins that the Messrs are doing a spectrum plate for him to go into the 'Proceedings [of the Royal Society]'. Huggins asks Harrison to send the head lettering and instruct the Messrs as to the size of paper. Thinks he ought to see a proof first if the work is advanced enough. Asks to know by return of post how the plate stands and whether he may expect a proof this week. |