IV PREFACE. 



maimer in which the various objects referred to should be 

 treated. 



The various chapters have been written by different members 

 of the staff of the Natural History Museum, with the hope 

 that the distribution of this work will lead to the formation 

 of important collections which will ultimately come to us for 

 study and comparison, and possibly enrich the series preserved 

 in the Museum. 



E. Eay Lankester, 



Director. 



British Museum (Natural History), 



Cromwell Road, 



London, S.W. 

 June Ut, 1902. 



In issuing a second edition of this Handbook it has been 

 found necessary to make only a few slight alterations and 

 additions, the principal being hints on collecting Ticks and 

 the importance of securing a considerable number of specimens 

 in certain groups, such as Arachnida and Myriopoda. 



E. K. L. 



January 1st, 1904. 



In the present edition some instructions are given respectino- 

 the collecting and preservation of Blood-sucking Arthropoda, 

 other than Mosquitoes and Tsetse-flies. With this exception, 

 only a few minor alterations and additions have been made. 



January, 190G. 



