PREFACE TO SECOND EDITION 



' I 'HE widespread interest aroused in the study of the 

 •*■ Mycetozoa by the publication of Mr. Lister's work 

 has found expression in a large influx of material, 

 the study of which has led to the recognition of new genera 

 and species, and an extension of our knowledge of the 

 geographical distribution of known forms ; and has in some 

 instances rendered necessary a re-consideration of views 

 previously held. These considerations, together with the 

 revision of the nomenclature in conformity with the Inter- 

 national Rules, practically necessitated re-writing the book 

 when the need arose for a new edition. In the preparation 

 of this edition Miss Lister has continued the work in which 

 she ^as for so long and so intimately associated with her 

 father, and for which she is so eminently well equipped. 



A special feature of the second edition is the replacement 

 of the collotype plates by a new and more complete series. 

 A large proportion have been reproduced by the three-colour 

 process, and greater justice has thus been done to the 

 original drawings by Mr. and Miss Lister, than was possible 

 by the method of reproduction formerly employed ; that so 

 large a proportion are reproduced in colour is due to Miss 

 Lister's generosity. A bibliography has been added, and 

 also a short glossary which supplements the explanation of 

 terms given in the Introduction. 



In order to make the National Collection as complete as 

 possible, Miss Lister is generously presenting a large series of 

 specimens to the Museum. 



A. B. RENDLE. 



Department of Botany, 



November, 1911. 



