96 HANDBOOK OF MOSSES. 



where the genus is a large one, I have two or more such 

 folios, putting the name of the genus at the top of the sheet, 

 with the first and last number of the species in the folio on 

 the margin. For instance, if the folio contained the genus 

 Dicranella, I should head the sheet with that name, and on 

 the margin put 48 57, these being the numbers as given 

 in the " London Catalogue of Mosses." The generic and 

 specific name of each moss should be placed on the sheet 

 on which it is mounted, together with the locality and date 

 when collected. It will be found serviceable, when a speci- 

 men is examined microscopically, to sketch what is seen on 

 the paper to which it is fastened. This will often render 

 the sheets of great value and assistance in future investiga- 

 tions. 



I have found that a magnifying power of 70 diameters is 

 sufficient for nearly all the mosses that I have determined ; 

 or when some more critical point had to be decided upon, 

 140 diameters. 



" The tiny moss, whose silken verdure clothes 



The time-worn rock, and whose bright capsules rise 



Like fairy urns on stalks of golden sheen, 



Demands our admiration and our praise, 



As much as cedar kissing the blue sky, 



Or Krubal's giant flower. God made them all, 



And what He deigns to make should ne'er be deemed 



Unworthy of our study and our love." 



Butler Si Tanner, The Selwood Printing Works, Frome, and London. 



