TEA ANALYSES—ADULTERATION DEFINED. S79 
changes were the same and of the same extent. These analyse. 
especial value on account of Mr. Kozai’s knowledge of tea manui 
and his residence in a tea-producing country. The percentages are 
referred to the dry matter, 
Original Green Black 
leaves.! tea. tea. 
a re 
= Crude protein --...-..---.---- Se rl ree Per cent.. 37. 33 37. 43 38. 90 
TIP ate te 2 ee ee ee ee eee da. 10. 44 10. 06 10. 07 
LETTS TIS SST E Se eee EA oe Ee a ee ee dots =<) 6.49 5. 52 5. 82 
Other nitrogen-free extract --.... Ms ae Pe ee de 22% 27. 86 31.43 35. 39 
eae a Rss ic a eee esos = Soe sete ek 45-25 -5=ne do> =] 4.97 | 4, 92 4.93 
EEL eee ee ee ee ee eee do | 3. 30 3. 20 3.30 
LIES 122i 2 pais 28 I ol OS es og. SO eS ae On Se ee do 12.91 10. 64 4.89 
TA SE Tp ea ae eee Sse eee a eee do 50. 97 53. 74 47. 23 
no SS ee ee ee es ee eee ne eee ae doi: 2¥: 5. 97 5.99 6. 22 
Sa CMMNNIINE MELMOMON © )- 5 05 - 5 - - 2 Sh ons 5e ony --2 5-25-22 -5--- do... 4.11 3. 94 4.11 
LL EE ee Ae A ee ee es en ee ds =—_- 0. 96 0. 93 0.96 
mido-nitrogen. .....=.--------=----------------<----+-+-----=-- de = 0. 91 1.13 1.16 
1 Portion of original sample of leaves dried at 85° C. 
2 Calculated as gallotanic acid. 
This table shows the marked difference between the composition of the 
green and the black teas. In the black tea there is a very considerable 
increase in the ** other nitrogen-free extract.” This increase has evi- 
dently taken place at the expense of the tannin, a part of which has been 
decomposed during the fermentation. This reduction in the tannin is 
probably one of the reasons why black is considered more wholesome 
than green tea by the English, but the change in the tannin alone will 
notaccount for this preference. There are notsufficient data concerning 
the ‘other nitrogen-free extract” and other constituents for a further 
discussion of this question or for a statement as to whether this pref- 
erence for black tea by the English is not merely a prejudice, 
ADULTERATION—DEFINITION. 
The law of the State of New York (see Part 2, Bulletin 13, p. 239) 
defines adulteration of food as follows: 
The term “‘ food,” as used in this act, shall include every article used for food or 
drink by man. The term ‘‘drug,” as used in this act, shall include all medicines for 
internal and external use. 
b. In the case of food or drink. 
(1) If any substance or substances has or have been mixed with it so as to 
reduce or lower or injuriously affect its quality or strength. 
(2) If any inferior or cheaper substance or substances have been substituted 
_ wholly or in part for the article, 
(3) If any valuable constituent of the article has been wholly or in part 
abstracted. 
(4) If it be an imitation of, or be sold under the name of, another article. 
(5) If it consists wholly or in part of a diseased, or decomposed, or putrid, or 
rotten animal or vegetable substance, whether manufactured or not, or, 
in the case of milk, if it is the produce of a diseased animal, 
