CHAPTER XXII. 



GLOSSARY. 



Acclimation. The spontaneous or natural process of becom- 

 ing, or the state or condition of being, inured or habituated 

 to a climate at first injurious. 



Acclimatization. The act of man in inuring or habituating 

 to a climate at first injurious, or the state or condition of 

 being thus inured or habituated by man. 



Adventive. Said of foreign plants which grow spontaneously, 

 but which are not thoroughly established. 



Agriculture. The art and science of cultivating land and 

 of raising plants and animals for economic purposes. The 

 term is often restricted to include only the cultivation of 

 grains and forage-plants and the rearing of domestic 

 animals, with the operations and studies incident thereto. 



Alburnum. Sap-wood. 



Ammonia. A pungent gas, composed of 1 atom of nitrogen 

 to 3 of hydrogen. In the commercial form, it is dissolved 

 in water. 



Annual. Living for one year only. 



Arm. In grape-culture, a vine-branch more than a year old. 



Assimilation. In botany, the production of organic matter 

 from inorganic matter. 



Bacterium (pi. bacteria). As popularly used, the term is 

 applied to an extensive class of microscopic organisms, 

 usually classed with plants. The term microbe is used in 

 the same sense. 



Basin. In descriptions of apples and related fruits, the depres- 

 sion at the apex of the fruit. The calyx sits in the basin. 



Berry. In botany, and properly, a separate fruit which is 



277 



