jp6 >" ; ; far-^- Quinine Cinnamon. 



36. The trunk of one of these trees when lying on the 

 ground is thirty feet high, which is as high as an ordinary 

 two-story house. 



37. One man had the stump of one of these trees 

 smoothed off and built a house on it. One of these huge 

 trees became rotten at the heart and was blown down in 

 a storm. The center was cut away so that a horse and 

 wagon could be driven through it. They are called the 

 Redwood trees. 



38. The bark of some trees is used to cover 

 houses ; that of the cork-trees of Portugal and 

 Spain gives us all our corks ; a certain tree from 

 Peru gives us/ in its bark, the fever-curing me- 

 dicines called quinine and cinchona. The slip- 

 pery elm gives also a medicinal bark. Cassia 

 and cinnamon are the bark of certain kinds of 

 laurel that grow in the East Indies. The 

 oak, the hemlock, and other trees enable us, by 

 means of their bark, to make leather out of 

 hides by a process called tanning. Boats also 

 are made of bark ; chiefly birch and spruce. 



39. There are some plants that seem offended 

 if you touch them, and close up their leaves im- 

 mediately. These are called sensitive plants. 

 The best one comes from Brazil. There is a 

 plant of this kind in our Southern States, but it 

 is not so sensitive. 



40. There are also plants that give us soap besides the 

 palm-soap which we have already mentioned. As you are 

 walking along in California you will sometimes see what 

 looks like an old paint-brush sticking up out of the ground. 



