REGISTER or ILLUSTRATIONS 



I'lf*- PAGE 



1 Apple twig in winter 2 



2 The same twig in fall before the leaves have fallen 2 



3 Apple twig showing formation of fruit-buds 6 



4 Apple twig in winter, showing deflected axis of growth 8 



5 The same twig before the falling of the leaves 8 



6 Twigs of dogwood, Cornus Baileyi 9 



7 Twin terminal buds of red elder, Sambucus racemosa 10 



8 Shoots of common lilac 10 



9 Lilac twig, to show deflected axis 11 



10 Twig of haw. Viburnum Lentago 12 



11 Bush of sumac, Rhus typhina 13 



12 Spray of white oak, Quercus alba 15 



13 Spray of Norway maple, Acer platanoides 16 



14 Same ., 17 



15 Young tree of black cherry, Pninus serotina 18 



16 Tree of sweet garden cherry, Pruuus Avium 19 



17 Tree of sour garden cherry, Prunus Cerasus 20 



18 19 Knots in oak limbs 21 



20 Knot in a hemlock log 22 



21 Knot in a white oak tree 22 



22 Healing of a wound on an apple tree 23 



23 Twigs of apple, to show spurs 25 



24 Spur on an apple twig 26 



25 Spurs of crab apple, Pyrus baccata 27 



26 Old spur of pear 27 



27 Spur of plum 31 



28 Twig of peach 33 



29 30 Twigs of peach 34 



31 Young fruit of peach 35 



32 Twig of cultivated gooseberry, Ribes oxyacanthoides 35 



33 Twig of black currant, Ribes nigrum 36 



34 Twig of dwarf juneberry, Amelanehier oblongifoUa 37 



35 Twig of balm of Gilead, Populus candicans 38 



36 Twig of Japan walnut, Juglans Sieboldiana 39 



37 Leaf-scar of sumac, Rhus glabra 39 



38 Leaf-scars of dahlia 40 



39 Leaf attachment in Arundo Donax 40 



10 Green-briar, ~Smilax rotundifolia 41 



(xxiii) 



