R. Clay

English Instrument Making in the 18th Century

Thomas H. Court, Reginald S. Clay, R. Clay, 1935 .

PRESIDENTIAL ADDRESS.: I.—A REVIEW OF THE MECHANICAL IMPROVEMENTS OF MICROSCOPES IN THE LAST FORTY YEARS

R. Clay, 1938 .

PRESIDENTIAL ADDRESS: I.—THE MECHANICAL DEVELOPMENT OF THE MICROSCOPE

Reginald S. Clay, R. Clay, 1937 .

Discussion of Papers

Thomas Højlund Christensen, Gorm Heron, Richelle M. Allen-King, 1916 .