. Bulletin (Pennsylvania Department of Forests and Waters), no. 46-50. Forests and forestry. â¢)â¢) T rill-: BKKCll-HlKCll-MAI'hK FoKKST TviM-: IX I'knnsviaania The IIeixmi-Birch-Maple Forest Type ix Pennsylvania 23. /â¢'///. /./. .1// Sit-y,(ir(Htl lir< ch-l'.hcU Maplr Stdnd Aiu loti'iinj ;/ /.(! Indus in l>iiniirt(r. This SIdnil Conhiins .'C, i Tvas fur Jrir irilh (t 'I'olnl I'dlinni nf },S.'> f Cubic h'rrt, <HiciIity ^rowili occurs, in the {ivcnio«. fully-slocked natural stand -M (10 ycai-s of a«i-c, trees possess a hole free of lind)s for 40 to ")() feet, so that ail woo
. Bulletin (Pennsylvania Department of Forests and Waters), no. 46-50. Forests and forestry. â¢)â¢) T rill-: BKKCll-HlKCll-MAI'hK FoKKST TviM-: IX I'knnsviaania The IIeixmi-Birch-Maple Forest Type ix Pennsylvania 23. /â¢'///. /./. .1// Sit-y,(ir(Htl lir< ch-l'.hcU Maplr Stdnd Aiu loti'iinj ;/ /.(! Indus in l>iiniirt(r. This SIdnil Conhiins .'C, i Tvas fur Jrir irilh (t 'I'olnl I'dlinni nf },S.'> f Cubic h'rrt, <HiciIity ^rowili occurs, in the {ivcnio«. fully-slocked natural stand -M (10 ycai-s of a«i-c, trees possess a hole free of lind)s for 40 to ")() feet, so that ail wood laid on thei'eafter will he ahsolutely clear, fi-oiii such stands is of the highest (|uality, naturally c()nniian(lin<i- the |U' .\vi;ka(;k \rMi^.KK of thkks i'kw xmv: in .-,. to sK-vKAirohD stwds or liKKCll-lillx'CH TVI'K IN XOKTII KI.'X I'KX X I .\ Afh .\ iniilx r of 'ift IS (Yrars) r<i .irn ~) :'.(i,(i()o 30 «.:.-)(1 15 .'),(!(1(1 20 1 .(mO 25 i,ir,(i 30 !MMi 35 7.')(l 40 «â ).")() 45 ~)~~} 50 .'L'.') 55 4r,() fiO ;) 05 ;;:.-) 70 :;.-)(Mi 1 '?.m 2250 2000 ^1750 o £l500 Q. U1250 cr I- oiOOO oc Ui (D r 750 3 500 250- 1 1 \ \ ^ \ \ ^^ ⢠10 20 50 40 50 60 70 60 /â¢'///. /â¢/. Dwflram Hhoning Averaqe Xnmher of Trccn per Acre in JUrch liirrh-Maple 't Stands of Xorthrru Fnivsylrania of DifTrrrnt nn 1o .S'y Yrars. â â . t Slands cut at (iO to SO years will yield approximately cuhic IVei. with a oQod percentaward (juality jiroduction, with exc*l" how rai)idly the numbei- of trees |)er acre decreases with a«i«'. 1 was exceedino-ly difiHcult to find even-ao-ed fully-stocked luitural exceeding 4.') years of age. for it was within that span of years INTENTIONAL SECOND EXPOSURE. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectforests, bookyear1923
