PREFACE. 



lot of this generation, nor, I fear, of that which is im- 

 mediately ,to succeed ; but it is perhaps conceivable 

 that it may be enjoyed by those brought up under the 

 improved sanitary conditions that will be established 

 in England, let us hope, at no very distant period. 



April 26th, 1 872, 



61, Grosvenor Street. 



