356 GENERAL REVIEW. 



pollen, and it might possibly be crossed with some of the 

 varieties of T. pavonia, and a new race thus produced. Ti- 

 gridias are readily multiplied by seeds sown in a well-drained 

 pot or box of light sandy earth, and placed on the shelf of a 

 warm greenhouse or frame to vegetate. Sow the seeds as soon 

 as ripe, and plant out the spring following. The seedlings 

 flower the second year. 



THE WALNUT FAMILY (Juglandacece). 



A small group of North American or Asiatic trees, repre- 

 sented in our gardens by Juglans regia or Common Walnut, 

 Carya or North American and Chinese Hickory Nuts, and 

 Fortunea chinensis, a tolerably well-known ornamental tree. 

 In Cashmere and Persia the Walnut is extensively cultivated, 

 and an excellent oil is there expressed from its nuts. There 

 are numerous seminal forms of the Common Walnut, which 

 vary not only in the size of the fruit, thickness of the shell, 

 time of ripening, flavour, &c., but also in habit of growth. 

 One variety of the Walnut common in Continental gardens 

 fruits freely when only three or four feet in height. A distinct 

 form (Juglans laciniata variegata) was raised in the garden of 

 the Museum at Paris from seed of f. regia laciniata. The 

 leaves, and occasionally the bark of the branches, are pleasingly 

 variegated with yellowish white, which contrasts finely with the 

 lively glistening green of the rest of the foliage. The variega- 

 tion did not appear until about the second year of the growth 

 of the plant. Walnuts are generally propagated from seed 

 (nuts), sown as soon as ripe in the nursery beds. A year or 

 two ago, in the ' Revue Horticole,' M. Andre hints that his 

 opinions as to the limits of species have undergone change 

 since he has seen in the nurseries of the Paris Museum some 

 trees of the White Walnut (Juglans regia} give birth to speci- 

 mens almost identical with the American Walnut (Juglans 

 nigrd}. A better plan to insure trees of any desirable variety 

 is to propagate, by flute-grafting or budding in April or May, 

 or by cleft-grafting in March and April : cleft-grafting at the 

 forks of the young branches of the stock is also successful in 

 March. M. Baltet recommends that " the scion should be 

 cut as much as possible obliquely across the pith, so that it 

 may be exposed on one side of the cutting only. A scion 

 whose base consists of two-year-old wood will be found to 

 answer well, and also one having a terminal bud. A stock 

 worked near the ground should always have the soil heaped 



