TANGIER PEA. 



285 



TECOMA. 



time the old tan may be sifted in 

 turning, and afterwards mixed with 

 new. To prolong the heat in tan by 

 diminishing the intensity of the fer- 

 mentation, common salt is sometimes 

 added ; and to increase the fermen- 

 tation, yeast, though rather an expen- 

 sive material, is sometimes mixed with 

 it. The heat of the tan-bed should 

 generally exceed the heat of the at- 

 mosphere of the house by from 3° to 

 10°, according to circumstances ; and 

 it should seldom be lower than 60°, 

 or higher than 75° or 80°. In gene- 

 ral, a tan-pit or bed requires to be 

 turned three or four times a year ; 

 and if salt is sprinkled over it each 

 time, the fermentation will be so far 

 retarded that the bed will retain its 

 heat for a twelvemonth. For the 

 purpose of growing Pine Apples or 

 large hot-house plants, oak or other 

 leaves, or even dung, may be substi- 

 tuted for tan ; but for the purpose of 

 striking cuttings, tan is greatly prefer- 

 able, because the heat produced is 

 not accompanied with so much mois- 

 ture, and hence the cuttings are not 

 liable to be damped off. In situations 

 where tan or leaves cannot be pro- 

 cured, sawdust is an excellent substi- 

 tute, and even the husks of oats. 

 Sawdust is an excellent medium for 

 the striking Epacrideee and the Cape 

 Heaths ; the heat being more gentle 

 and regular than with most other fer- 

 mentating substances. "When tan has 

 lost the greater part of its heat, it then 

 forms an excellent medium for striking 

 fleshy-leaved plants, such as Bromelia, 

 which require rather a dry heat, and a 

 medium which undergoes the least pos- 

 sible change in respect to moisture. 



Tanacetum. — Compositce. — The 

 Tansy. Herbaceous plants, which 

 are quite hardy in any common gar- 

 den soil, and which are increased by 

 dividing the roots. 



• Tangier Pea. — Ldthyrus Tingi- 

 tanus. — See Lathyrus. 



Tansy. — See Tanacetum. 



Taxodium. — Coniferce. — See De- 

 ciduous Cypress. 



Taxus. — Coniferce. — The Yew. 

 The common yew is too large a tree 

 to be noticed here ; but the Irish yew ? 

 from its erect form and broad leaves, 

 makes a very handsome plant, which, 

 from the slowness of its growth, may 

 for a long time be almost considered a 

 shrub. There are also some Japan 

 and Chinese species (some of which 

 are now included in the genus Podo- 

 carpus), which are very ornamental. 

 They will all grow in any garden soil, 

 and are raised by seeds. 



Teak Wood. — See Tectona. 



Tea Tree.— See Thea. The Duke 

 of Argyle's tea-tree, Ly'cium bar- 

 barum, is often called the Tea-tree in 

 gardens, from the following droll mis- 

 take. A Duke of Argyle, who lived 

 about a hundred years ago, and who 

 was a great patron of gardening and 

 botany, sent out to China for the tea- 

 tree, which was obtained ; but unfor- 

 tunately the voyage home being very 

 rough, the label was transferred acci- 

 dentally to a plant of the Lycium 

 barbarum, which had been obtained 

 from the coast of Barbary. The real 

 tea-plant died before it reached Eng- 

 land, and the Lycium being at that 

 time unknown in Britain, it was sup- 

 posed to be the tea- tree, till an exami- 

 nation of dried specimens, &c, proved 

 the mistake. 



Tecoma. — Bignoniacece. — The 

 Trumpet Flower. All the species 

 which now compose the genus Tecoma 

 were formerly well known under the 

 name of Bignonia, particularly T. 

 rddicans, the common trumpet- 

 flower, which is quite hardy in British 

 gardens, and T. grandiflbra, which 

 is nearly so. Some of the species 

 require a greenhouse, and some a 

 stove ; but they all grow freely in a 

 rich, light, loamy soil, and they are all 

 propagated by cuttings of the roots. 



