DICOTYLEDONS OLEACE^E K03ACELE DIAGRAM 14 193 



with a stone. The olive grows slowly, like the box, and its wood 

 is also very hard. It is not grown in England, and grows to a 

 larger size in the East than in South Europe. The fruit is only 

 gathered when the cold weather sets in. The olives are the 

 pickled to be eaten, or pressed to extract the oil, which is the finest 

 kind known. 



The ash is placed in the same family as the olive. The manna 

 which is sold by druggists is produced by a species of ash which 

 grows in the East. The manna flows from the bark of the tree 

 and forms what is called tears. It is gathered and sold without 

 any other preparation. 



FAMILY ROSACE^. DIAGRAM 14. 



The family Rosacese is one of the largest and most important. 

 Besides the rose, the strawberry, and the raspberry, it includes 

 a great many fruit-trees ; the apple, pear, peach, medlar, 

 cherry, plum, apricot, and almond. The characters of the Rosacese 

 must not be looked for among our garden roses, they are plants 

 which have been completely changed by cultivation. Cultivation 

 often produces this effect, and it soon happens that a cultivated 

 plant no longer resembles the plant from which it was derived. 

 One of the first effects of cultivation is to multiply to an inordinate 

 extent the number of petals, and to produce what are called double 

 flowers instead of single flowers. But cultivation likewise increases 

 their perfume. 



The character of the family Rosacese, as it is exhibited by the 

 wild roses which grow in the hedges, is to have five expanded 

 petals like the oleander, and numerous stamens. But these petals 



o 



