Institute;
II. Generic Images, extract from Lecture in 1879 to Royal
Institution;
III. Memoir read in 1881 before the Photographic Society.

B. THE RELATIVE SUPPLIES FROM TOWN AND COUNTRY FAMILIES
TO THE POPULATION OF FUTURE GENERATIONS

Memoir read in 1873 before the Statistical Society.

C. AN APPARATUS FOR TESTING THE DELICACY WITH WHICH WEIGHTS
CAN BE DISCRIMINATED BY HANDLING THEM

Memoir read in 1882 before the Anthropological Institute.

D. WHISTLES FOR TESTING THE UPPER LIMITS OF AUDIBLE SOUND
IN DIFFERENT INDIVIDUALS

Read in 1876 at the South Kensington Conferences in
connection with the Loan Exhibition of Scientific Instruments.

E. QUESTIONS ON VISUALISING AND OTHER ALLIED FACULTIES

Circulated in 1880.





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