: laid-,eh,Mass . ,TJov . 6,1910 
Dear Mr .Collins , 
The desmid book of " r hioh I spake to youi® 14 ;- 
a monograph of the British Desnidiaceae & n.P.Tert. The first vol¬ 
ume T r f\.s issued is a publication bp the Ray Society of London in IPO'*;!-”'® 
volumes have been issued since,and more are to come. 
Miss Tilden 1 s book is 
Minnesot a, nig ie, v ol.I. Report of the -Survey,Botanic i.l series,VIII. 
Published bp authority of the Board Regents of the University for 
People of Minnesota,Apr.,1910. 
Very truly, 
