POULTRY. 279 



average 20 cents per dozen, what is the value of a year's product from a 

 flock of 95 hens? 



6. If we estimate pay for feed, labor, interest on the investment, 

 as given by the experiment stations, at $1 per head; what is the net 

 profit on each hen according to figures given in problem 5? What is the 

 per cent gain? 



1. The U. S. Department of Agriculture reports that 7.8 per cent 

 of all eggs marketed in the U. S. are rotten or unfit for use; what was 

 the loss to consumers, if they paid $500,000,000 for eggs in 1911? 



8. If eggs uniform in size and color are worth 3 cents more per 

 dozen in the big markets, than eggs indiscriminately mixed, what was the 

 gain of the man who kept pure bred chickens for uniformity of color of 

 eggs, and who assorted his eggs for uniformity in size and received 23 

 cents per dozen for 65 crates of eggs? 



9. An experiment in 1907-8 by the Agricultural College of South 

 Australia, showed an average annual production of 255 eggs per bird for 

 two years; at the present price of eggs, what would be the gross earnings 

 per hen? 



The Ohio Experiment Station secured reports through co- 

 operative experiments on 31 flocks of chickens in the State of 

 Ohio; 18 of these were farm flocks, and 13 were city-lot and 

 surburban home flocks. The average size of the farm flocks 

 was 121 fowls; the average size of town flocks was 46 fowls. 



1. The greatest profit from a flock on^the farm was $2.47 per head, 

 while the flock yielding the least profit showed only 14.5 cents per fowl. 

 What would be the difference in income from these two flocks, if the 

 flock yielding the greatest profit consisted of 96 fowls and the lowest 

 yielding flock consisted of 149 fowls? 



2. If the average profit from town flocks was 32 cents per fowl, and 

 the average profit was 83 cents per fowl from farm flocks, what was the 

 difference in profit between a town flock and a farm flock if each con- 

 tained 82 fowls? 



3. One town flock of 60 fowls yielded a profit of $1.29 per head; 

 and another flock in town yielded 56 cents, profit per head in a flock of 

 87 fowls; what was the income from each flock? What was the gain 

 percent of the better flock over the one giving the poorer yield? 



4. The investigation showed that the feed for the 13 town flocks cost 

 on an average 97 cents per head ; and 18 farm flocks cost 61 cents per 

 head; how much greater is the cost per cent of the town flocks over the 

 farm flocks? Why this difference? 



5. According to reports of the station one town flock produced 145 

 eggs per hen in a year, and another flock produced 43 eggs per fowl per 



