TEMPERATURE. 



497 



THE PICK. 



country are, Tecoma Capensis, with light ! well known to need any lengthened 



scarlet flowers ; T. stans. with yellow 

 flowers ; and T. jasminoides, having white 

 flowers with beautiful crimson throat, a 

 charming plant for ornamental purposes in 

 the greenhouse. 



Temperature, Sudden Change under the influence of 



description here. It is sufficient to say 

 that the ordinary form consists of a 

 wooden frame, in which is inserted a 

 tube of very small bore, terminating at 

 the bottom in a bulb, and hermetically 

 sealed at the top. All bodies expand 



centre and chains or ropes directed to the spirits of wine is made use of. The 

 sides, to be covered with creepers ever- mercury having been introduced into the 

 green or annual, or both, on alternate bulb, the freezing and boiling points are as- 

 certained, and the distance between these 

 points is divided into 180 on Fahrenheit's 

 Thermometer. scale and I00 o on the Centigrade scale. 



The principle of the thermometer is too j Freezing point is marked at 32 on Fahreiv 



33 



