Tea, coffee, and cocoa preparations

Tea, coffee, and cocoa preparations

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LIBRARY OF THE UNIVERSITY OF CALIFORNIA. GIFT OK Class . OF AGRICULTURE.U. S.DEPARTMENT DIVISION OF CHEMISTRY. No. 13.BULLETIN FOODS FOOD ADTTLTEKANTS. MAKE FNDEli DIRECTION OFINVESTIGATIONS H. W. WILEY, ClIIKF C'UKMIST. PART SEVENTH. AND COCOA PREPARATIONS.TEA, COFFEE, BY GUILFORD L. AssistantSPENCER, Chemist, WITH THE COLLAP,'NATION OF MK. ERVIN E. EWELL. PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE. WASHINGTON: r ' V 1 ;UN ^IEN ']' PRIX i I X Cr OFF I ( E , 1 S ,t L' . DEPARTMENT OFU. S. AGRICULTURE. DIVISION OF CHEMISTRY. BULLETIN No. 13. FOODS AND FOOD ADULTERANTS. INVESTIGATIONS MADE UNDER DIRECTION Or H. W. WILEY, CHIEF CHKMIST. PART SEVENTH. AND COCOA PREPARATIONS,TEA, COFFEE, 35Y GUILFORD L. AssistantSPENCER, Chemist, WITH THE COLLABORATION OF MR. ERVIN E. EWELL. PUBLISHED BY OP OPAUTHORITY THE SECRETARY AGRICULTURE.. WASHINGTON: GOVERNMENT PRINTING OFFICE, 1892, TABLE OF CONTENTS. Page. Letter of transmitted v of submittal vii Tea : 875 ofStatistics tea consumption 875 General classification 875 Methods of manufacture 876 teasBlack 876 Green tea , 878 Adulteration definition 879 methods 880 Detection of 881facing or exhausted leaves 882Spent leavesForeign 883 885 astringents Added mineral matter 885 .

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LIBRARY
OF THE
UNIVERSITY OF CALIFORNIA.
GIFT OK
Class.OF AGRICULTURE.U. S.DEPARTMENT
DIVISION OF CHEMISTRY.
No. 13.BULLETIN
FOODS
FOOD ADTTLTEKANTS.
MAKE FNDEli DIRECTION OFINVESTIGATIONS
H. W. WILEY,
ClIIKF C'UKMIST.
PART SEVENTH.
AND COCOA PREPARATIONS.TEA, COFFEE,
BY
GUILFORD L. AssistantSPENCER, Chemist,
WITH THE COLLAP,'NATION OF MK. ERVIN E. EWELL.
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE.
WASHINGTON:
r
'
<G > V 1 ;UN ^IEN ']' PRIX i I X Cr OFF I ( E ,
1 S ,t L'
.