QUAKING ASP. TREMBLING POPLAR. POPPLE. 



I'opiihis I I'l' III uloidrs jliclix. 



Fi'4. I--, r.rnnclilt-'ts willi nialurc mid vouii.l; le;i\cs, i : isolated cniply capsules, j; a capsule 

 and ils actual cuntenls, procured liy conhniiT^ llic capsule ai tiie iinic of dpcuiip^, ;, : lirancldct in 

 winter with cluster n\ (Inwcr Imds near lip, .4. 



123. Trunk of tree in l'"ssex Co., N. ^'. Note the transition from smooth yuun- hark to 

 rouyh old l.iark. 



