29, Got to Derby.

1674. First acquaintance with Sir I. N. at Cambridge, occasioned by my fixing there the Microscope, which he could not; the object glass being forgot by him.

1675. feb. 2. Came to London Again.

1675. Mar. 4. Warrant for my Sallary.

Sieur de St. Piex proposes to find the Longitude by Observations of the Ds. * * * Letters hereon.[244]

1675. June 22. Warrant dated for building the Royl. Observatory.

♀ August 10. foundation layd.

1676. July 10. entred into it to inhabit wth T. Smith, and Cutler Denton Servant.

1675. Sept. 19. began to measure distances in the heavens wth the sextant.

76. Sir Jonas Moor gave me the sextant, some books, and glasses, with charge to dispose of them by my Will: all the other instruments and tubes provided at my own charge.