GYMNOSPORANGIUM. 



399 



of the spot in iiu.->tiun is either completely destroyed <>r brans- 

 formed into irregular cells, separated liy intercellular spaces. 



The anatomical changes in swelling- < Fiir. 235) indue.-.! l,v 

 //. sdbinae mi Juniperus /v</,///,/ \vere investigated l>y \V<>enile 

 with the following results. Wood, bast, and rind an- increased 

 round the whole ciiviinit'i-renr.- <f the MI-HI. Al.'iiu with 

 the broadening of the year-rinus, however, there occurs a 

 in the structure of the diseased wood. The same 



change 



1 I' P. Ill V: I li.- k-;if t.i 1. ft h.in.l 1.. 



ii i-.-.l >|>..t- ..I, tin- \\\>\n-\- surface "i th.- i. MI' ; ti,. r, in dnli 

 :i:i .in r.iis.-.l |..,rti..n-, ..f tli.-ir Burl 

 "' peridia dehiscing by longitudinal alita. (v. lui^uf ,u-l.) 



'ur in th.- year-rings as already d.-s.-rilK-d l'..r G. 

 davanaeforme, viz. thick, -nr,! twisted tracheids, loosely connected 



t"X'-ilifr and with lissiiiv-like ]iits; medullary rays nmre 

 mini. 'luii-: and hroad.-r ; the limits of the year-ring dillicult t.i 

 di.Min-ui.~h : and a yellow pi-ment deposited in the walls ..!' 

 all the elements. A tissue "f this nature may l.e I'mmd round 



the whole circumference "!' a twig even in the in , after 



. 



infection, and re-ularly each succeedin pear. \\'M.-IHI d\ 



ly I'oillid ZOnefl "I' inv-idar cell-t',,1 inaliuii lik,- 



