REJUVENESCENCE IN NATURE. 47 



way, if the chief bud is not unfolded, there arises the 

 appearance of two buds placed side by side, one drying 

 up and the other fresh. The stuntedly developed chief- 

 buds are no other than the first "Geitzen" of the vine, 

 which are repeated in a more distinct manner in the fol- 

 lowing years ; from the lateral buds, on the contrary, are 

 developed in the next years the first "Lotten" of the vine, 

 which at once grow out more vigorously and more slender 

 than the head-shoot of the seedling, and, as the preceding 

 statements indicate, arise from the base of the stunted 

 " Geitzen," and not directly from the middle-shoot, thus 

 representing properly a secundane, a ramification of the 

 second degree. The "I/often" differs from the head- 

 shoot in many respects; they have never spiral, but 

 always distichous arrangement of the euphyllary leaves ; 

 they bear numerous tendrils, or "forks," as they are 

 called ; and, what is most important here, a minute ex- 

 amination shows that they are never simple, but linked 

 sprouts, forming a sympodium. It is well-known that 

 the tendrils of the vine stand opposite to the euphyllary 

 leaves ; this is explained by the fact that the tendril, as 

 the temporary apex of a sprout, becomes turned towards 

 the side by the succeeding sprout, arising from the axil 

 of the uppermost euphyllary leaf, while the new sprout is 

 attached upon the euphyllary region, as an apparently 

 direct prolongation. Another point especially worthy of 

 remark in this is, the regular alternation in the character 

 of the sprouts linked together to form a "Lotte" occurring 

 after the first member of this series of sprouts. The first 

 sprout with which the "Lotte" commences is different 

 from all the succeeding, since it commences with a cata- 

 phyllary formation (with the two basilar bud-scales, 

 visible even in the first year), and after this produces 

 mostly more than two (3 5) euphyllary leaves, before 

 it terminates with the formation of the tendril. The 

 tendril, like all the succeeding tendrils, bears a hypso- 

 phyllary leaflet, from the axil of which arises a branch, 

 which gives the tendril the well-known forked form. All 



