EEAUMUE 
49 
tliat these baizonges ” were identical with the galls 
formed from the terebinth by le Puceron de petolin, 
Goedaert seems to have been the first to show 
the friendly relations which exist between ants and 
Aphides. He even goes so far as to give imaginary 
conversations between the two insects upon such sub- 
jects as relate to warning them of the approach of 
their enemies. Whilst praising the general accuracy 
of this author, Reaumur says that he committed a great 
error in adopting the then popular prejudice that 
ants were the true mothers of Aphides. 
Reaumur describes several insects which prey on 
Aphides, and particularly he refers, by their local trivial 
names, to Syrphus, Coccinella, and Hemerohius. He 
also shows that Aphides are liable to the attacks of a 
fly which inserts its eggs within their bodies and destroys 
them.* Like Leuwenhoek, Reaumur failed to discover 
the males and females of Aphides, viz. those perfect sexes 
which subsequently have been proved to end each 
individual series. Failing in this discovery both 
authors concluded that these insects were true herma- 
phrodites. 
Reaumur thought the results of his experiments, 
though incomplete, were so remarkable, that he 
prevailed on his friend Charles Bonnet, of Geneva, to 
continue them, feeling sure that they would well 
repay the labour bestowed on investigating their 
history. 
Bonnet appears to have been an enthusiastic natu- 
ralist, and a man of good fortune. He was thus enabled 
efficiently to conduct experiments at his comfortable 
chateau, situated at the little village of Geuthod, at 
the foot of the High Alps of Savoy. t For many con- 
secutive years he studied the habits and mode of re- 
production of Aphides. The results of his labour and 
sagacity are embodied in his celebrated ^ Memoire pour 
^ E-eaumur, op. cit., p. 331. 
t In the frontispiece of the work above mentioned Bonnet gives us 
an engraved representation of his chateau, with its ornamental grounds. 
4 
