FREE BOOKS

Author's List




PREV.   NEXT  
|<   436   437   438   439   440   441   442   443   444   445   446   447   448   449   450   451   452   453   454   455   456   457   458   459   460  
461   462   463   464   465   466   467   468   469   470   471   472   473   474   475   476   477   478   479   480   481   482   >>  
shing a breed depended, therefore, in the first place on the natural variability of wild animals and plants, then on the variations induced in animals and plants under subjection to the new conditions brought about by man's interference, next on the extent to which these variations, natural or artificial, persisted through the series of generations, and finally on man's intelligence in altering or maintaining the conditions of the environment, and in selective mating. The theory of breeds and breeding depends, in fact, on knowledge of variation, of modification by the environment, and of heredity. Any attempt to give an account of what actually has been done by man in establishing breeds would be little more than an imperfect summary of Darwin's work. The articles HEREDITY, MENDELISM and VARIATION AND SELECTION show that what may be called the theoretical and experimental knowledge of variation and heredity is far in advance of the practical art of breeding. Even horticulturists, who have been much more successful than those who deal with animals, are still far from being able to predict the result of their selections and crossings. None the less it may be stated definitely that such prediction is already so nearly within the power of the practical breeder that it would be a waste of time to give a summary of the existing rule-of-thumb methods. The art of breeding is so immediately destined to become a science of breeding that existing knowledge and conceptions must be dismissed as of no more than historical interest. (P. C. M.) BREEZE, (1) A current of air generally taken as somewhat less than a "wind," which in turn is less than a "gale." The term is particularly applied to the light wind blowing landwards by day, "sea-breeze," and the counter wind, blowing off the land at night, "land-breeze." The word appears in Fr. _brise_ (admitted by the Academy in 1762). The Span, _brisa_, Port. _briza_, and Ital. _brezza_ are used for a wind blowing from the north or north-east. According to Cotgrave, Rabelais uses _brize_ in the sense of _bise_, the name of a dry north or north-east wind prevalent in Switzerland and the bordering parts of France, Italy and Germany. The word is first used in English as applied to the cool sea-breeze blowing usually from the east or north-east in the West Indies and Atlantic sea-coast of Central America. It was then applied to sea-breezes from any quarter, and also to the land-breeze,
PREV.   NEXT  
|<   436   437   438   439   440   441   442   443   444   445   446   447   448   449   450   451   452   453   454   455   456   457   458   459   460  
461   462   463   464   465   466   467   468   469   470   471   472   473   474   475   476   477   478   479   480   481   482   >>  



Top keywords:

breeze

 

blowing

 
breeding
 

animals

 

applied

 

knowledge

 

heredity

 

environment

 

breeds

 

variation


summary

 
variations
 
plants
 

natural

 
existing
 

conditions

 

practical

 

counter

 

landwards

 

historical


interest

 

dismissed

 

science

 

conceptions

 
BREEZE
 

generally

 
current
 

Germany

 

English

 

France


prevalent

 
Switzerland
 

bordering

 

Indies

 

breezes

 
quarter
 

Atlantic

 
Central
 

America

 

Academy


admitted

 

appears

 
destined
 

Rabelais

 

Cotgrave

 
brezza
 

According

 
mating
 

theory

 

depends