TABULAR SYNOPSIS 
357 
LEEUWENHOEK’S “FIRST 27 LETTERS” 
Letter 
Addressed to Date Roy. Soc. MS. Published in Phil. Trans. 
H. Oldenburg ? [No MS.] | Vol. VIII, No. 94, pp. 6037-6038. 
[Transmitted 1673. [Extracts, in English. ] 
by de Graaf | Vol. VIII, No. 97, pp. 6116-6118. 
28 Apr. 1673] 1673. (Figures, with description in 
English. ] 
H. Oldenburg | 15 Aug. 1673 | L.1. 1 | Vol. IX, No. 102, pp. 21-23 and 
23-25 [in 2 parts]. 1674. [Extracts, 
in English.] 
H. Oldenburg! 7 Apr. 1674 | L.1. 2 | Vol. IX, No. 102, pp. 23-25. 1674. 
[Combined with part of Letter 2, 
| Extracts only, in English. ] 
H. Oldenburg | 16 Apr. 1674 | L.1. 83 | Unpublished 
Lys Ee Sa ee eee Lia Ala Pa Ne 
H. Oldenburg | 1 June 1674 | L.l. 4 | Vol. IX, No. 106, pp. 121-128. 1674. 
[Part only—in English. ] 
H. Oldenburg | 6 July 1674| L.1. 5 | Vol. IX, No. 106, pp. 128-131. 4674. 
| [Extracts only—in English. ]} 
H. Oldenburg | 7 Sept.1674 | L.l. 7 Vol. IX, No. 108, pp. 178-182 [mis- 
printed 821]. 1674. [Incomplete 
English translation. ] 
H. Oldenburg | 7 Sept.1674 | L.1l. 6 Unpublished 
H. Oldenburg | 19 Oct. 1674 | L.1. 8 | Unpublished 
H. Oldenburg | 4 Dec. 1674 L.1. 9 | Vol. X, No. 117, pp. 378-380. 1675. 
[Extracts in English. ] 
H. Oldenburg | 22 Jan. 1675 | L.1. 10 | Unpublished 
H. Oldenburg | 11 Feb. 1675 | L.1. 11 | Unpublished 
H. Oldenburg | 26 Mar. 1675 | L.1. 13 Unpublished 
H. Oldenburg | 14 Aug. 1675 | L.l. 15 Vol. X, No. 117, pp. 380-385. 1675. 
(Extracts, in English.] 
H. Oldenburg ; 20 Dec. 1675 | L.1. 16 Unpublished 
H. Oldenburg | 22 Jan. 1676 | L1. 16a | Unpublished 
H. Oldenburg | 22 Feb. 1676 | L.1. 17 Unpublished 
H. Oldenburg | 21 Apr. 1676} L.1. 18 Vol. XI, No. 127, pp. 653-656. 1676. 
[Incomplete English translation, 
with notes (by Nehemiah Grew).] 
H. Oldenburg | 29 May 1676} L.1. 20 Unpublished 
R. Boyle 28 July 1676 |[ With Unpublished 
Boyle MSS.] 
H, Oldenburg | 9 Oct. 1676 | L.1. 22 Vol. XII, No. 133, pp. 821-831. 1677. 
[Incomplete English translation. } 
