p!oei?(§ltfi<3sparselynaiiyihiitg oitibi el jjT bjMtitiop ©f the* 
vi^s'aif.dfiacglurtndnft)3i ©f previou6)vlrite isg rvHth holhini^&hbstantidlly nbtff 
ou-til i esuHjeptoodFtei *1 wearing anil’ theory] whlahneP&ties'the (productive i 
pedteirjof jtiberplddt'iiii Tkeosepd©nlyy : seeriis; JtoiK0v<k toeealthelfdwoorite 'brdU 
adapted.ni sqoio ?4i arm tom novo dl .goi'iJfjwoa ogodJ lo orn< ;« lo hood 
IiiOiqo'iJ .odJ ai-tferutafi q) ’*^oqq$ -ion eoob fqd : i r j htw 
It js tins theory, so imposing and plausibleiin its several propositions^ 
mvtfji 4 o'A 000 Jr'in 000,1.' 1o7io0iiv5]o /in de. Boaur i a ;«onm ©*r« 
'which we propose first to consider. It is said by some wrjiteys ,to liav^ 
passed through a most rigid and searching ordeal of objections and certi- 
eisfcps/jfahd lo! haye/beooimejrjf.firotifhBy Established*! at Mails fc generally dd- 
ntttt€td,j(blyo^bientific .-mefni dvA./va£fr ambunt joini aigeimity and learning have' 
beien^peiodbdoto({establish!.fitsi .Lypol(hfifcic$df>propqsitiiaiiid, -afid -to - apply'' 
tbepa j to,- (the . pifEs'entj'jappahjep'tty.rienfeebled'KciDiiditiOn' of !thd 'poiatoi IV 
starts sfrijtb<bypothesik,vtliat ail pMuts) wliicibjamprdpaglated by bbdsp 
ejUj,tihgp W olayer^j o-^l s J ’o.ots l i;li.are//n.otIhiiig ohore dibiao ah. {extension of tlife 
enigma} !plai)tr iwbieb duife djnlyj(ai)determinate]r exf sidncb > comtnensurath 
yrjitji itfip ljfp of |the jn<j4viTuIitbujsl propagated .8 i ;T.liusi, t jie potato, produced.- 
frppittbE' rOtily <aiy£xibn$i)ohiof ntT-ieilifedOfuthe iniividpal plants 
th$ 5Y;be§ ^ 0 grafted jiponijatiotheiirceij ivbioh is'tmiy an; 
e^fpjngMee> foW wlfiolp it ifeasiieriteiufu»It?is>ho «^2d4«fiep 
bg.tfftftliy $# pA'<^,W^tibh;of(tbe/.(?Wplatojtw lEaab ^successii^ 
tufbepjipphJip j'tffprpnAid) trbfc d^bbM^tjng!ie&Pit^oCif’iagp' <wbiefy 4lie mtxt. 
pppppdfifQg;$ne<jp^i^ (rpip y i|s- 3 ipijpedto,hppe^jrjfc:>apj(ibi^(Ma*iitilt (tb* 
ii^djvisual;g&mUfl Q9fA)Pjlpfcfy,e^^.v^tpdiby ( ageJ(if/fibis is Wiliatp.assiaaaedt 
by tlie advocates of the wearing out theory, as a point d'appui of byrpov 
tf 
cessive eullivat 
L'jbv/ a i. si dT 
thp particulai 
ions, ana eacn succeeding year adds to the degeneracy of 
,iQ*i olnioq odl/ioi vbom'ri .Inaiioinq him oln? n iJYOoaih 
lety cultivated ; f so,tnat.this process, pi 
i i V 4 < . V •* f -IV » V* 
upe particular variety cultivated; so .mat tms process, nas only, to be con- 
qn 81108190 mo.'ii enounoiniunrnoo b.oibm/d /rn -rovo pfmUamog ilJioi hoiino 
tmued a sufficient leiigtb of timp to result in the total extinction of the 
.801/?ip O'jiinTjT ofil Tg’enoil’ioq .jnoiufSiD hnn ,o:c,to od-J To slmoInoiohil) 
individual variety. Letuis subiect .this .theory to a few pimple facts and 
i boJn 9 a 9 '{q gvrbiY.oiTi lo ylnfffimii on-J him ^oomopiT ilfunfioiTJ Tina 
f jections, and see if it do hot rest upon an,en,tire]y vision,ary f fpundTtioi> H 
pnqa.t Au t 8V)Urff hoononoqxo hrnf ^noguioini J«orn p.IJ ToopXi/a oni 
e J will do this with, all .possible deference" to the opinions of those wha 
hoinooT) oonfijerm/oiio ?ifli .oofiraanujoiio <zswiovt*ifji nn on oj Oino<i (u 
/]<j^ndifilrBt,8hsotio dheldd^mieracyiofi Iw^diitMs.viff^kiybh'^'asgh^ptionHiiaif 
the;<cp3Ddry r ,tnatu®qhindde<©f -)piibp agaiiha 
