OPEN LETTERS. 
TO BRYOLOGISTS. 
Tue undersigned desires to make a full canvass of all working bryologists 
and collectors of mosses, both American and foreign, believing that a better 
general acquaintance will further both the friendly and scientific spirit. To 
this end the following data are cordially solicited from all who have not already 
sent them ; 
1. Name in full; age; vocation. 
2. Average time your vocation annually permits you to devote to mosses. 
3. A list of your bryological publications ; alsoa list of exsiccati you may 
tave distributed, 
‘ Have you worked on any foreign moss flora? State in which geo- 
Sphical region you are most interested. 
§- Which genera, or larger groups, are you making your specialty ? 
- Are you desirous to have referred to you for critical examination 
*pecies that fall in the line of your special interest ? 
7. Do you exchange mosses? If so, what material do you offer? 
A circular embodying these questions was sent out in June of the preaee 
ae ‘Was answered so approvingly and enthusiastically that I feel pagel 
j me m making an additional effort to make the data as complete as possible, 
{ oe collected into permanent form, and to place them finally 
q hands of each one interested.—Joun M. HouzinceR, Winona, Minn. 
