“ce 
356 LEEUWENHOEK AND HIS “LITTLE ANIMALS” 
maker may well have had Leeuwenhoek himself as a model. 
The portrait is therefore worth consideration. The second 
carved likeness is the white marble medallion on his tomb (see 
p. 100, and Plate XV). This was made after his death, and 
was probably modelled on the silver medal. It has less interest, 
therefore, as a portrait. The third representation is that on 
the “ Leeuwenhoek Medal,” awarded every ten years by the 
Royal Academy of Sciences of Amsterdam to persons who have 
distinguished themselves as microbiologists.' This medal is of 
gold, valued at f.300 (about £25), and has been described and 
figured by Harting (1876). The portrait which it bears is, 
however, a modern fake; and its historico-iconographical 
value is consequently mil. 
(vii) LEEUWENHOEK’S “FIRST 27 UNPUBLISHED 
LETTERS ” 
As Leeuwenhoek’s own collective editions of his works— 
both Dutch and Latin—begin with a letter called “No. 28”, 
dated 25 April 1679, it has generally been assumed that all his 
earlier letters (No. 1—No..27) have been lost. But this is not 
so: most of them have been preserved among the Royal 
Society MSS., and many have been printed in English or Latin 
(generally abbreviated) in the early volumes of the Philosophical 
T'ransactions. 
I have discussed these letters in some detail in an article 
about to appear in Opuscula Selecta Neerlandicorum, Vol. IX, 
so I need not repeat what I have there said.” But as my 
numeration differs entirely from that of Vandevelde—who 
previously attempted to arrange and number them without 
consulting the original manuscripts—and as I have made 
frequent references to these letters in the foregoing pages, I 
give here a tabular synopsis for the reader’s convenience and 
culdance. 
1 The first award was made to C. G. Ehrenberg in 1875. The later 
recipients have been Ferdinand Cohn (1885), Louis Pasteur (1895), 
M. W. Beijerinck (1905), David Bruce (1915), and F. d’Herelle (1925). 
2 Since these lines were written, the article has appeared in print: see 
Dobell (1931). 
