250 
LEEUWENHOEK AND HIS “‘ LITTLE ANIMALS ”’ 
in front, and anon with the other.t’ These animalcules, 
as they appeared to me, I have shown in Fig. A. [See 
Text-fig. 4.] 
And I saw, too, sundry animalcules”’ that had very 
near the same length, and also some a bit longer. These 
moved their bodies in great bends, in comparison of the 
first animalcules, and made with their bendings so swift 
a motion, in swimming first forwards and then backwards, 
and particularly with rolling round on their long axis, 
that I couldn’t but behold them again with great wonder 
i as 3 B 
ee ig 
\ ~— 
=a — 
Sis Cc fy. 
———" Se 
a a 
[Text-Fia. 4] 
and delight: the more so because I hadn't been able to 
find them for several years, as I’ve already said. For I 
saw not alone the nimble motion of their own body; but 
the little animalcules too, which swam in great plenty 
round about these animalcules, were shoved off or driven 
away from them, just as if you imagined you saw a 
butterfly or moth flitting among a swarm of gnats, so 
that the gnats were all wafted away by the butterfly’s 
wings. ‘These animalcules I have represented in Fig. B. 
1 This very acute observation was made on other bacteria, of course, at 
a much earlier date—as already noted. It furnishes conclusive proof that 
the organisms observed were bacteria. 
2 From the following account these were evidently spirochaetes again: 
but the figures are very poor, and could hardly be identified without L.’s 
description of the organisms themselves. 
