4 DEPARTMENT OF AGEICULTUEE BULS. 951-975, 



Department Bulletin No. 954. — Wintering and Summer Fattening of 



Steers in North Carolina — Continued. Page. 



II. Cost of wintering and fattening steers on grass the following summer. . 13 



Prices of feeds 14 



Average cost of wintering 15 



Cost per pound of gain 16 



Profit per steer 17 



Summary of gains and costs 18 



Conclusions 18 



Department Bulletin No. 955.^Unit Requirements for Producing Mar- 

 ket Milk in Southeastern Louisiana: 



Character and scope of the work 1 



Methods of obtaining the data 2 



Requirements for producing 100 pounds of milk 3 



Description of the herds 4 



Requirements for keeping a cow one year 4 



Credits for manure and calves 4 



Requirements for keeping a bull 7 



Factors involved in the production of milk 7 



Feeds 7 



Pasture 8 



Labor 8 



Other costs 9 



Percentage comparison of factors involved 10 



Average costs compared with bulk-line costs 11 



Monthly distribution of factors in milk production 13 



Summary 14 



Department Bulletin No. 956. — A Study of the Factors Affecting Tem- 

 perature Changes in the Container During the Canning of Fruits 

 AND Vegetables: 



Basis of the study 1 



Review of the literature 2 



Methods and apparatus 6 



The steam retort 7 



The brass fitting 8 



Thermocouples 10 



The water bath 10 



Preliminarv experiments 10 



Di ^tilled water 10 



T rine 14 



Sug ir solutions 14 



Starch solutions 16 



Sing] '^-period processing 17 



String beans 18 



Peas 21 



T ima beans 24 



So^^ bean'^ 25 



A'^paragus 28 



Sweet corn 29 



"ump'-in 34 



Sweet potatoes : 36 



Tomatoes 39 



Cabbage 41 



Tractor ^ affecting the change of temperature at the center of the can. . 42 



Intermittent processing 45 



String beans 45 



Sweet corn 47 



So^^' bean^ 48 



Sweet potatoes 50 



Fa-'tor" influencing the rate of change of temperature 50 



Summar^^ 53 



T iterature cited 55 



