CONTENTS 



Department Bulletin No. 951. — ^Methods for Close Automatic Control 



OF Incubating Temperatures in Laboratories: Page. 



Construction of temperature-control compartment 2 



Construction of room 2 



Heating equipment 5 



Description of temperature-control systems 7 



Temperature recorders 11 



Cost of operation 16 



Department Bulletin No. 952. — Commercial Utilization of Grape Pom- 

 ace AND Stems from the Grape-juice Industry: 



The conservation of fruit-product wastes 1 



Accumulation and present disposal of grape waste. 2 



Available quantity of grape waste 4 



Commercial products obtainable from grape waste 4 



Cream of tartar from grape stems 5 



Preparation of grape pomace for the manufacture of jelly and oil 6 



Malcing jelly from grape skins 10 



Quantity and value of jelly and residue 13 



Manufacture of oil from grape seeds 15 



Extracting tannin from the hulls 17 



Quantity, uses, and value of the oil, oil cake, and tannin-extract from 



grape seeds 18 



Gross returns and net profits from the undertaking 20 



Summary 22 



Literature cited 23 



Department Bulletin No. 953. — Nitrogen and Other Losses during the 

 Ensiling of Corn: 



Purpose of paper 1 



Previous investigations of nitrogen and other losses 1 



The experimental work 5 



Manner of placing and removing samples 5 



Collection of the juice 6 



Method of analyzing samples 6 



Results of the analyses 6 



Discussion of results 9 



Conclusions 15 



References to literature 15 



Department IU.lletin No. 954. — Wintering and Summer Fattening of 

 Steers in North Carolina: 



Outline of the experimental work 1 



The region and its problems 2 



Objects and plan of the work 3 



Kind of steers used 4 



Feeds used 4 



Winter ]iastures and their establishment 5 



Method of feeding and handling the steers 6 



I. Winter rations and their influence on pasture gains of 2-year old steers. . 7 



Quantity of feed consumed 7 



Losses during winter 9 



(uiins during summer 9 



Losses and gains, \vinter and summer 10 



Grapliic presentation of losses and gains 11 



Conclusions 13 



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