IND 



and into tlic new wood ol' plum, cher- 

 ry, and other trees, is often very ser- 

 viceable wiien they are bark bound. 

 It should be done mi summer, and the 

 incision made Iroin the branches to 

 the earth. 



I N CI 8 O R S. The sharp cutting 

 or nippmg teeth placed in front of the 

 mouth of animals. 



INCOMBUSTIBLE. Not capable 

 of burning. Cloths and wood are 

 rendered almost incombustible by 

 soaking in a solution of borax, alum 

 sal ammoniac, phosphate of soda' 

 &c. The metallic salts used in pre- 

 serving timber render it very incom- 

 bustible ; it smoulders, but does not 

 burn with flame. 



INCOMPATIBLES. Substances 

 which cannot exist in solution with- 

 out decomposition. 



INCUBATION. Hatching. This 

 may be done by artificial heat distrib- I 

 uted through a chamber by steam • ' 

 the temperature is about 102 ^ Fahren- 

 heit. See Gestation. A contrivance 

 tor artificial hatching, called the Ec- 

 caleobion, has been exhibited in New- 

 York. 



INCUMBENT. In botany, leaning 

 against. ® 



INDEHISCENT. In botany, a 

 iruit which does not open when ripe 

 as succulent berries 



INDIAN BLACK DRINK. See 



HoUy. 



INDIAN CORN. SeeCorw. 



J^DIAN CRESS. Thenasturtion. 



JND AN HEMP. See Hemp. 



JSm^^ MILLET. See mUct. 



INDIAN PHYSIC. GMcma trifo- 

 hala. An indigenous herb, the peren- 

 nial root ot which is a good emetic 



INDIA RUBBER. Caoutchouc. 

 1 he dried mdky juice of the Sipho- 

 nia elasttca, and other euphorbiaceous 

 trees. It is a compound of 90 car- 

 bon and 10 hydrogen, or C3 H,. India 

 rubber is much used in the laboratory 

 to unite tubes, &c. 



It is dissolved by coal naphtha, 

 lorniing a varnish, which, brushed on 

 cloth, renders it water-proof; two 

 pieces of cloth are used, the varnish 

 rubbed on one, and the other brought 

 at once into contact ; they adhere 

 416 



IND 



firmly. Linseed and other fi\ed oils 

 dissolve a small amount of caout- 

 chouc ; pure ether has the same prop- 



^Vhen heated to 600°, it throws up 

 a vapour, which, by refrigeration, is 

 obtained as a volatile fluid, called 

 caoutchoiicine. This is a remarkable 

 solvent of common India rubber res- 



'""rV'vT.''^.''^'^ """P^'' ^"'l "lany oils 

 INDIAN TOBACCO. HceLobda 

 INDIAN TURNIP. Ar^tukyl 



nZf X ^'"\?^'''- ^ ^•"""""" "'"rsh 

 plant, the bulbous roots of which con- 

 tain much starch, and are occasion- 

 ally eaten, after being dried, but it is 

 acrid when fresh 



INDIGESTION. This is charac- 

 terized by loss of appetite, flatulen- 

 cy, uneasiness over the stomach, ir- 

 regularity of the bowels, and imper- 

 fect dejections. It requires to be 

 treated by exercise, gentle purges, 



change ot diet, abstemiousness, and 

 tonics. 



INDICATION. The particular 

 treatment indicated by the symptoms 

 01 a disease. " 



INDIGENOUS. Native plants. 

 &c., are so called. 



I^PJGO. A blue dye-stuff pro- 

 cured from many leguminous plants 

 but chiefly from the Indigojcra imclo- 

 na (Fig.), which is cultivated in the 



East and West Indies, the continent 

 ol America, and the United States, 

 as It yields the largest amount of col- 

 ouring matter. In Guatimala. the 



/ 



