23. 
24. 
25. 
26. 
27. 
LEEUWENHOEK’S WRITINGS 395 
containing respectively Letters 43, 42, 38, and Letters 28, 29, 30, 
31, 34, 35, 36, 46, 47, 44, 45, 48, 49, 50, 51, 52 (in this order). 
All letters unnumbered. Figs. partly engraved in text, and partly 
inserted as separate plates. With engraved title of No. 8, but 
Dutch words erased. ] 
A Second Issue of the preceding (No. 22) with the misprints 
“inanimarum ” and “ nebeficio”’ in title corrected to inanimatarum 
and beneficio. Same date, place, and publisher. [In the copy in 
my possession—the only one which I have collated—the first part 
(Letters 43, 42, 38) is paged 3-78, and is a reprint of these pages in 
No. 21 (not 22). The mispagination of Part II is also partially 
corrected. | 
(a) Editio novissima, prioribus emendatior [retranslation, with letters 
still unnumbered]. 4°. Lugd. Bat., 1722 (Langerak). 
Continuatio Epistolarum, Datarum Ad longe Celeberrimam Regiam 
Societatem Londinensem. 4°. Lugduni Batavorum, 1689 (Bou- 
testein). [pp. viii (title & indices) + 124. Contains Letters 53-60, 
in order; with continuous pagination but unnumbered.] 
(a) Second edition ; Lugd. Bat. 1696 (Boutestein). 
(0) Third edition; Lugd. Bat. 1715 (Du Vivie, Haak, & Langerack). 
Letters unnumbered. 
(c) Another [? 4th] edition, Lugd. Bat. 1730 (Langerak). Letters 
unnumbered. 
Arcana Naturae Detecta. 4°. Delphis Batavorum, 1695 (Krooneveld). 
[Engraved portrait and title (same as No. 15, but with Latin 
lettering and dated 1695) + pp. vi + 568 + xiv (index & emen- 
danda). Contains Letters 32, 33, 37, 39, 40, 41, 61-92, with con- 
tinuous pagination. Letters 32-41 unnumbered: 61-92 numbered.] 
(a) Second edition ; Lugd. Bat. 1696 (Boutestein). 
(0) Third edition; Lugd. Bat. 1708 (Boutestein). 
(c) Editio novissima, auctior et correctior; Lugd. Bat. 1722 
(Langerak). 
Continuatio Arcanorum Naturae detectorum, qua continetur quicquid 
hactenus ab Auctore lingua Vernacula editum, & in linguam Latinam 
transfusum non fuit. 4°. Delphis Batavorum, 1697 (Kroonevelt). 
[pp. i + 192 + viii (index). Contains Letters 93-107 : all numbered, 
and with continuous pagination.] 
(a) Reprint, with new titlepage, Lugd. Bat. 1722 (Langerak). 
Epistolae ad Societatem Regiam Anglicam, et alios Illustres Viros Seu 
Continuatio mirandorum Arcanorum Naturae detectorum [etc.]. 
4°. Lugduni Batavorum, 1719 (Langerak). [Portrait + pp. xvi 
(title & index) + 429 + x (2nd index). Contains Letters 108-146, 
all numbered and continuously paged. Lat. transl. of No. 18.] 
Epistolae Physiologicae Super compluribus Naturae Arcants [{etc.] : 
hactenus numquam editae. 4°. Delphis, 1719 (Beman). ([En- 
graved title, with portrait inset (same as No. 19, but with Latin 
lettering at foot, and dated 1719); pp. xx (title, dedication, & 
summary) + 446 + xxvi (index & errata). Contains Letters 
I-XLVI; all numbered, and paged continuously. Latin 
translation of No. 19.] 
