I have recently learnt from the publishers of the 
international Scientific Series’ that they have made 
arrangements with Sir John Lubbock to bring out in the 
same series a work of his on Ants and Bees. Necessarily, 
therefore, the material to be dealt with in his work will 
to a large extent overlap that which is presented by my 
chapters on the same insects ; but after consulting with 
the publishers, and also with Sir John Lubbock, it has 
seemed to me undesirable to omit these chapters on 
account of the circumstances here stated. For, on the 
one hand, the facts will not lose their value from being 
twice told ; and on the other, it is desirable that the 
present member of the Series should form in itself, so 
far as its Author can make it, a complete resume of all the 
more important facts of Animal Intelligence . 
