the MS is divided along lines closely similar to those used by Grew, and lists the items noted by Grew with subsequent donations to about 1719 interspersed in the earlier part. Later donations to about 1725 have been added in a manner that suggests it was used as a running catalogue until about that date. It seems likely that it was the work of Moses Williams, who would presumably have protested its unofficial status to the 1723 Committee. Confirmation that it continued to be used as the principal catalogue in 1731 is provided by the additions made by the Committee in that year. Similarly, of the later sections, only that on corals has the entries individually numbered, and it was noted in June 1733 that John Martyn, who had served on the 1730 Committee, ‘did formerly at ye Desire of ye Committee examin & number ye Corals’: Roy. Soc. MS. 490 (CMB 63), meeting of 15 June 1733. (210-11, n.50)