514 The Book of the Balance of Wisdom. [October, 
“ Coral,” he writes, “ is a plant, though petrified like the 
Jew’s stone and the sea-crab.” He is aware that “ glass is 
not the product of a mine, but, on the contrary, kindred to 
stones, or sand, or alkali,” and he states that he has included 
it in the above list, “ because it resembles crystal.” 
The third table comprises “ the materials of models and 
patterns formed by goldsmiths, and woods of well-known 
trees.” Interpreting the Arabic weights as before, we have 
the following table : — 
Specific Gravities. 
Substances. r ’ n 
Al-Khazini. Modern Authorities. 
Clay of Siminjan .... 
. rg 9 
clay 1*068 to 2*63 
Pure salt 
. 2*19 
2*068 to 2*17 
Saline earth 
. i*u 
— 
Sandarach 
1*05 to 1*09 
Amber 
• 0-85 
ro6 to ro8 
Enamel . , 
• 3*93 
— 
Pitch 
. 1*04 
1*07 
Wax 
• °‘95 
0*96 
Ivory 
. 1*64 
1*82 
Ebony 
. 1-13 
1*18 
Pearl shell 
. 2*48 
2*64 
Bakkam wood 
. 0-94 
1*03 
Willow wood 
. 0*40 
0-58 
The last table embraces a r 
Substances. 
lumber of liquids. 
Specific Gravities. 
• 
Al-Khazini. 
A 
Modern Authorities. 
Sweet water 
1*000 
1*000 
Hot water 
0-958 
0-959 
Ice 
0-965 
0*916 to 0*926 
Sea water 
I*04I 
1*028 to 1*040 
Water of Indian melon . . 
1*016 
— 
Saltwater [saturated solution] 
1*144 
1*205 
Water of cucumber . . . 
1*017 
— 
Water of common melon 
1*030 
— 
Wine vinegar 
1*027 
• — 
Wine 
1*022 
1*013 
Oil of sesame 
0*9^5 
0*992 to 1*038 
Olive oil 
0*920 
0*917 to 0*919 
Cow’s milk 
mo 
1*029 t° 1*040 
Hen’s egg 
1-035 
1*090 
Honey 
1*406 
i*45o 
Blood of men in good health 
1*033 
i*053 
Warm human urine . . . 
Cold human urine .... 
i*oi8| 
1*025) 
roii 
