CONTENTS. 



XVI. Some Observations on Celeriac, with Directions for its 

 Cultivation. By Joseph Sabine, Esq. F. R. S. $c. Secre- 

 tary. p , 71 



XVII. Memoranda respecting the Culture of Fig Trees, in 

 the open air, in England. Drawn up at the desire of the 

 Right Honourable Sir Joseph Banks, Bart. G. C. B. By 

 the Right Honourable William Wickham. p. 74. 



XVIII. Upon the Variations of the Red Currant (Ribes ru- 

 brum) when propagated by Seed. By Thomas Andrew 

 Knight, Esq. F.R. S. $c. President. p. 86 



XIX. Account of a Method of Grafting Oranges and Lemons, 

 so as to produce Dwarf Fruit-bearing Trees. In a Letter 

 to the Secretary. By Mr. John Nairn, Gardener to John 

 Cresswell, F.L. S. fyc. p. 91 



XX. Some Account of the Esperione Grape. In a Letter to 

 the Secretary. By John Townsend Aiton, Esq. F. H. S. 

 of Windsor, Gardener to His Majesty. p. 93 



XXI. On a Method of retarding the Ripening of Grapes in 

 Hot Houses, so as to obtain a Supply of Fruit in the Winter 

 Season. In a Letter to the Secretary. By Richard Ark- 

 wright, Esq. F. II. S. p, 95 



XXII. Some Account of the Purple-fruited Passion Flower, 

 of late cultivated in England, and of the other known Spe- 

 cies, which bear edible Fruit ; with Observations on the Pas- 

 sifiora incarnata of Linneus, and on the first Plant of the 

 Genus, which was introduced into Europe. By Joseph 

 Sabine, Esq. F. R.S. Secretary. p. 99 



XXIII. Notices of Subjects communicated to the Horticultural 

 Society, between May 1st, 1817, and April 1st, 1818, of 

 which Separate Accounts have not been published in its 



