3 c.c. Uranium.
.'. 100 cc. Uranium = 0.5 gram As.
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10071 5 grams
Tin Ore Cruc. and SnO_{2} 9.6065 grms.
Feb. 3/89 Cruc. and Ash 9.4235 "
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SnO_{2} = 0.1830 = 2.88% Tin
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_The Assay Book._--This is the Official book, and is a combination of
the Sample and Laboratory books. It corresponds with the report-forms.
Without being loaded with detail, it should contain sufficient to
characterise each sample.
Key to following example page of Assay book:
DR = DATE REPORTED.
Not Det. = Not detected
EXAMPLE OF PAGE OF ASSAY BOOK.
-------------------------------------------+----+-------+---------------+----
DESCRIPTION OF SAMPLE. | | Water | Assay on |
------+--------------------+---------------| |Lost at| the Dry |
Date. | Material. | Weight. |No. |100° C.|Material. | DR
------+--------------------+---+---+---+---+----+-------+---------------+----
1889 | |ton|cwt|qrs|lbs| | | |
Feb. 1|Tough cake copper | | | | | 482| |Arsenic, 0.
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