xiv PREFACE TO LIST OF MOSSES, &C. 
the eastern moorlands ; 50 to 60 inches being- recorded from 
many of the high ridg-es of the western hills. On the eastern 
hills the wettest localities rarely have a rainfall of more than 
40 inches annually. 
Although the list of mosses recorded for North Yorkshire 
is considerably increased since 1863, it should not be con- 
sidered a final one. There are larg-e tracts of uncultivated 
moorlands on both sides of the central vale with suitable 
habitats for their growth, we may hope that future students 
of these plants, by the aid of recently published works, 
may be able to make further discoveries and additions to the 
Bryology of North Yorkshire. 
I must beg to thank all my botanical friends who have so 
kindly assisted me by sending- specimens from the various 
localities, which have increased the list so much since 1863. 
The names of the following" contributors are g-iven, after the 
locality recorded, with the dates of their gatherings as far as 
1 have been able to ascertain them. 
The late Samuel Anderson, Whitby. 
Dr. R. Braithwaite, Brixton Hill, London. 
Mr. R. Barnes, Harrogate, was some years the manager 
of the public gardens at Saltburn. 
Mr. L. J. Cocks, Bromley Hill, Kent (formerly of Harrogate) 
Mr. W. Ingham, B.A., York. 
Mr. J. J. Marshall, Beverley. 
Mr. J. Needham, Hebden Bridge. 
Mr. George Stabler, Levens, Westmorland. 
Mr. George Webster, York. 
Mr. J. A. W^heldon, Walton, Liverpool, formerly resided 
in York. 
