443 



fit first white but becoming mw, and in exhibiting ;in inti-mal 

 differentiation which those of J'. vaporarius lo not. 1 



The hyphae in the coursi- of their -rowth do ii"i seek out 

 the pits, but grow straight through tin- walls and brinu r about 

 dissolution of the middle lamella for sonic di-tain around. At 

 the same time numerous short oblique fissures in tin- walls are 

 produced vertically one over the other, especially in the elements 



Kii.. -"''. /'" ' ' I !" 1 1 



ii.- IM.M. I ' ..... 1, lr'>iri -Alii'-h ,i I'.. ui'lli h.i> I" n CUl 



(v. Tulii-nf ).h..t.) 



of the thicl<-\vallcd autumn Wood. ( ( 'umpare with /'. s-/\ 



moides, l''i'_ r . L' S "). Thf phfnomriia accompanying destruction of 



wood i.y ibis inn-US are so characteristic that <'on\vri; .uid 



di>t iii'juish it i|iiite clearly in I ivc-rcinain< riiclo-nl in ambfi. 



r.i.-fcld BUCCeeded !>> artificial culture of the .spoivs. m r;ii-iii'j 

 a myei.'lium on which ha<idia wnv foim,^!. at tir-1 diiv. il\. 

 afi.-rwards from larv Bporophon 



Polyporus squamosus illuds. i. tl'.i-iiain and U.S Ameri< 



l:. ll.niiir. /'. / n-liii //'in.*, /in -11111111. I'x-iliii 



- ( 'll|l\M-||t/. MI, in, i/i 'l/'lli' <l. I, >lll,,, It, . I', .', iillm Hi,,. 



