Vill PREFACE TO FIRST EDITION 
demand most of our attention. For all of these reasons the limits 
which we shall draw to the subject of agricultural bacteriology are 
somewhat arbitrary, and some of the topics here considered may 
not be regarded as belonging strictly to the subject. All of them, 
however, have at least an incidental relation to the farmer and his 
industry. 
H. W.C. 
MIppLetTown, Conn. 
