Vlll PREFACE. 



The pictorial illustrations are almost co-exteusive 

 with the descriptions ; tliej are one hundred and thir- 

 teen in number ; all, with the exception of eighteen, 

 productions of the author's own pencil, the great ma- 

 jority having been drawn on the wood direct from the 

 Microscope, at the same time as the respective descrip- 

 tions were written. He ventures to hope that they 

 will be found accurate delineations of the objects repre- 

 sented.* 



Torquay, February, 1859. 



* The subjects on pp. 48, 54, 112, 114 (the lower figures), and 175, 

 have been copied, under the courteous permission of the publisher, from 

 i^r. Carpenter's valuable work, " The Microscope, and its Revelations." 

 ( 'liurchill, London.) 



