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Comprising:

(1) 'On the diffraction of light produced by an opaque prism of finite angle' (offprint from Proceedings of the London Mathematical Society, 1904)

(2) 'Note on a paper by W. Makower entitled 'On the method of transmission of the excited activity of Radium to the cathode' ' (from Proceedings of the Physical Society of London, 1905)

Number of ladybird individuals (male and female) recorded.

Tables of male and females and numbers of eggs.

Recordings of day, time, mating cycles, eggs laid and hatched in each experiment. Some loose sheets recording experiment data inserted into back of notebook.

Focussing on male killing. Lists of things to test and gives theoretical argument.

Notes and annotated diagrams. Tallies of different types of butterflies caught. Index of moth types.

Notes and findings.

Lists of data submitted to journals.

Experiment results listing dates eggs hatched.