PRACTICAL WORK. NO. XIV. 225 



ii. Examine the young Cherry fruit preserved in 

 alcohol, and note the point of attachment of the stalky the 

 scar of the style, and the longitudinal groove representing 

 the suture of the single carpel. Cut the cherry in half 

 along this groove and show on your sketch 



a. the part which forms the flesh of a ripe cherry ; 



6. stone (closely adherent to a.): this you will find 

 now becoming hard beneath the scar of the style ; 



(a and 6 together constitute the pericarp). 



c. the attachment of the ovule to one side of the 

 stone, near the stigmatic end, and the bundles running up 

 from the stalk to the ovule ; note that only a single ovule 

 comes to maturity ; 



d. the nucellus and endosperm. 



iii. Halve a ripe cherry and identify the parts already 

 seen, noting especially the hard stone which on being 

 broken is found to contain one seed. 



II. Pear (Pyrus communis). 



iv. In a Pear flower whose petals have fallen note the 

 five sepals, numerous stamens, five styles which arise from 

 the centre of the flower, and the swollen receptacle 

 beneath the sepals. 



v. Cut longitudinal sections of the flower till the 

 axial section is reached and mount this in dilute glycerine. 

 Make a sketch of the remaining half under the simple 

 lens, showing: 



a. hollow receptacle ; 



6. sepals; 



c. stamens ; 

 D. E. B. 15 



