A GUIDE FOR KEEPERS OF POULTRY 231 
cure it, give the sick fowl an equal quantity of turpentine 
and olive oil. Give an adult fowl from one to two table- 
spoonfuls; for a chick from a 10-drop-dose to a teaspoon- 
ful according to age. Keep in a warm place and feed rice 
boiled in milk. 
LINE-BREEDING.—The whole subject of line-breed- 
ing has been so fully and clearly treated by Prof. H. C. 
Pierce of the Iowa State College in THE BreEEvER’s Ga- 
ZETTE that we reproduce it entire: 
‘Line-breeding may popularly be defined as systema- 
tized inbreeding. It is a system of inbreeding to per- 
petuate and intensify in their offspring the good qualities 
of individuals, and at the same time avoid the difficulties 
and failures that often result from too close inbreeding. 
Persistent close inbreeding, such as the mating of brother 
and sister for several generations, often results in im- 
paired fecundity, loss of size, and decrease in constitution 
and vigor. Cross-breeding or outbreeding, on the other 
hand, where birds of different varieties or even different 
strains within a variety are mated together, tends to 
break down the blood lines and cause variations from the 
types of the parents. 
“In many cases where birds of outstanding excellence 
but different bloodlines have been mated together the 
offspring has been decidedly inferior to either of the 
parents, because the bloodlines did not ‘nick’ to perpetu- 
ate their good qualities, but allowed the defects of each 
to appear. Cross-bred stock, however, usually possesses 
good fecundity and constitutional vigor. 
“Line-breeding therefore endeavors to secure the good 
properties of both systems without the faults of either. 
A clear conception of the methods followed in line-breed- 
ing may be had by studying a chart (page 232) which 
