304 THE GREENHOUSE. [chap. XI. 



protected by straw during frosty weather. 

 There are some camellias in the Vauxhall 

 Nursery (Messrs. Chandler's) which have been 

 treated in this manner, and have stood out for 

 several years. The hardiest kinds, and the 

 most suitable for planting in the open air, are, 

 the Single Red, the Double Red, and the 

 Double White. The magnificent Camellia reti- 

 culata is also said to be tolerably hardy. The 

 tenderest of the common kinds are, the beau- 

 tiful apple-flowered variety of C. Sasanqua, 

 and the single variety of this species, the 

 flower of which resembles that of the tea 

 plant. These plants are both of low growth, 

 and ought always to be kept in pots. Camel- 

 lias are very often infested with insects, parti- 

 cularly a kind of black aphis, the only reme- 

 dies for which are fumigation and constant 

 syringing. The leaves of camellias should be 

 always syringed on the under side, as well as 

 on the surface, as they curve inwards a little, 

 and thus afford a shelter to insects, from which 

 it is very difficult to dislodge them. For an 

 account of the new method of grafting the 

 camellia, now practised with great success at 

 Knight's Exotic Nursery, King's Road, Chelsea, 

 and some other places, see p. 90. 



Geraniums, or Pelargoniums. — The beautiful 

 greenhouse shrubs which we are accustomed to 

 call geraniums, have, in fact, been long sepa- 

 rated from that genus, and formed into a new 

 one called Pelargonium. The principal differ- 

 ence is in the shape of the seed-vessel; that of 

 the Pelargonium being like a stork's bill, and 

 that of the Geranium like a crane's bill. Both 



