| Description | Experiment records, photographs, diagrams and reports. 'K. R. Kew' written on front cover and an introduction to a report mentions that the experiments were carried out at Kew. Seems to be the work of Kate Ritson [possibly a student], and includes a letter addressed from Kew to Ellen M Delf asking her views and giving her the information she has asked for. August 1926 - January 1927. |