. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects . Jt is true that inmost instances of grafting little or no struc-tural change is visible. The stock apparentlygoes on in its way, the scion follows its own?course. The exceptions are so few that it{las been accepted almost as a dogma thatthe stock does not affect the scion, nor thesscion the stock. But although we are unableto see the change by our unassisted vision,it by no means follows that no change takes(place. The exceptions, few though theyare, are inereasins in numl>er to such an?extent th
. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects . Jt is true that inmost instances of grafting little or no struc-tural change is visible. The stock apparentlygoes on in its way, the scion follows its own?course. The exceptions are so few that it{las been accepted almost as a dogma thatthe stock does not affect the scion, nor thesscion the stock. But although we are unableto see the change by our unassisted vision,it by no means follows that no change takes(place. The exceptions, few though theyare, are inereasins in numl>er to such an?extent that it is fair to assume that changes?do take place, even though our coarser per-ceptions may not reveal them to , what do we graft for if not tosecure some change that is advantageousrto us ? This is op^ of those numerous questionss\hich cannot be settled except by prolofiged?experiment and observation. The mostbrilliant experimenter in this field of lateyears is Professor Daniel, of Rennes, towhose extraordinary experiments we havefrom time to time alluded. In the various. Fig. 84.—flowering spray of cytisus purpureus. a Pear-tree has lately been made the subjectof investigation by Professor Daniel. ThePear in question had been headed back, andit produced from the stock shoots with loaveslike those of the Quince, whilst three others,from the point of union of stock and scion,formed leaves intermediate in their char-acters between those of the Quince andthose of the Pear. In this case tht stock vealed variations in minute structureanalogous to those seen by the naked ^rnal structure therofore, as ^11 as ex-ternal conformation, showed that the newshoots were examples of graft classical examples of graft hybridisa-tion hitherto have been the Medlar , and the Adams Laburnum, towhich reference has frequently been made 218 THE GARDENERS CHRONICLE. [September 24, 1904. in these columns. To thes3 we must nowadd the numerous cases obser
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