CALYCIFLORE 99 
special favour (since it was out of bounds at other 
seasons of the year) to visit for the Exeat, when more 
lucky members were able to take a holiday, to stay 
with their relations for the brief mid-term lull in the 
work. 
The cherries called Geans, Hearts, and Bigaroons 
are derived from this species, whilst the Wild Cherry 
or Dwarf Cherry is the origin of the Morello, Duke, 
and Kentish Cherries. As implied by its second 
name it is not so tall a tree as the Gean, seldom 
exceeding 8 to ro ft. in height, whilst the Gean may 
grow to a height of 20 ft. 
The trink is often thick, straight, with smooth, 
umber bark, branching above with a series of straight 
branches which radiate from a centre. The leaves 
are long-petioled, ovate, with an acute point, downy 
below, drooping (in Prunus Cerasus they are glabrous). 
The flowers are white, several in'an umbel, drooping, 
whereas in P. Cevasus they are erect. 
The calyx tube is narrowed below the sepals, which 
are entire. The petals are flaccid, not firm. The 
fruit is heart-shaped, not round. The fruit is small 
and bitter, black or red, the fruit of P. Cerasus being 
always acid and red. 
The kernels when eaten are poisonous, containing 
prussic acid. Death has resulted from eating them 
in quantity. 
Johnstone says—“ The only immediate remedy for 
poisoning by prussic acid is pouring a stream of cold 
water from some height upon the head and spine. 
