Meteorological Instruments
Found in 2 Collections and/or Records:
Hygroscopium per [illegible], 1697
Diagram and English description of a twisted-cord hygrometer. Below is Lucan's epigram about Pompey's failure to preserve the Republic against Caesar's megalomania. The date is 15 September 1697. Attached by glue is a slip of paper showing a short line of algebra.
Oratio de Baroscopiis in Coni: publ: Acad: Edinburg: 1688, 1688
Graduation speech, in Gregory's hand, of one Charles Sinclair. It explains the barometer, and mentions the work of Torricelli, Huygens, and Hooke. Several diagrams append.