258 SIR JOHN LUBBOCK ON 
Figs. 115-121. 
Populus nigra, var. pyramidalis, X 2. Winter-buds. -otos 
115. Terminal bud showing one pair of persistent stipules, st sf, belonging ^ 
leaf of the previous season. 
116. Terminal bud showing one from each of two pairs of pe 
st’, st", 
117. Axillary bud showing only one of the outer pair of s 
rsistent stipules, 
tipules, st. 
118. Z, third leaf in the bud, often dying in winter; S, st, its stipules show? 
separate. down 
119. Z, fifth leaf in the bud; s, st, ite stipules, 119a. The sm 
separately. 
120. Z, eighth leaf in the bud ; st, s¢, its stipules. 
121. 1, inner face of eighth leaf; sz, sf, its stipules spread out. 
