4 BRITISH GEAPTOLITBS. 



Edinburgh, and Dublin; the Museum of Local Natural History, Keswick; Mr, 

 Postlethwaite and Mr, Christopherson, Keswick ; Dr. H. Oliphant Nicholson, 

 Edinburgh ; Mr, J. E. Marr, Cambridge ; and Mr. Matley, Birmingham. 



Bearing in mind the fact that the primary need for a work of this kind is 

 the natural demand of the field geologist and the palreontologist for figures and 

 descriptions of the British species, we propose that the bulk of the letterpress and 

 plates and figures of the earlier parts of the Monograph shall be devoted to this 

 purpose. Such technicalities as are necessary for the diagnoses in each group will 

 be prefixed to the section to which they refer. The working classification adopted 

 by us is that in use among the majority of graptolithologists, and in the descriptive 

 parts of the work all questions of theory respecting classification, nomenclature, 

 and the like will be as far as possible avoided. In the parts to be published in 

 future years there will be included, first, a general account of the historical 

 development of our knowledge of the G-raptolites ; next, a comparative account of 

 the structure of the various families, etc. ; and afterwards sections dealing with the 

 classification, zoological relationships, and geological range. As the descriptive 

 and the general sections will he paged separately, the two may in future years be 

 published concurrently. 



CHAS. LAPWORTH. 



Birmingham Universitt ; 

 November, 1901. 



