PROPERTIES AND USES. 389 



to describe it as a Fern, to which Linnasus gave the name 

 of Polypodium Barometz. 



About fifty years ago the late Mr. John Reeves, who had 

 long resided at Canton, succeeded in obtaining living plants 

 of it, which he transmitted to this country, and which first 

 produced fructification in the Birmingham Botanic Garden, 

 which having come under my notice it became at once 

 obvious that it was a species of Ci~botium, and which, in my 

 Definition of Ferns, 1841, I called 0. Barometz. 



A closely allied species, C. Cummingii, is found in Luzon, 

 and another, C. Assamica, in Assam j this Fern also 

 appears to be represented in Sumatra, as some of the 

 soft silky hairs similar to those of Barometz have been 

 imported from that island into Holland, under the name of 

 " Penghawar D'joumbi," and are found to be useful as a 

 styptic. 



C. Chamissoij C. Menziesii, and C. glaucum, natives of 

 the Sandwich Islands, differ from G. Barometz in being 

 arborescent, the stem of C glaucum attaining the height of 

 24 feet, the crown of fronds adding 12 feet more, making 

 the total height of the tree 36 feet. The base of the stipes 

 of the fronds is densely furnished with fine silky hairs, 

 which being permanent clothe the stem, forming a thick 

 wool-like coat, which is collected and used for stuffing 

 cushions, mattrasses, and the like. During the ten years- 

 previous to 1865 it became an article of commerce under 

 the name of Pulu, and ship loads of it were sent to Aus- 

 tralia and California, but lately it 'has fallen into disuse. 



Dicksonia chrysotricha. 



This is a tree Fern, a native of Java. Its silky hairs 

 have been imported and used as a styptic. 



