230
The HISTORY of
| A Small Stone of the Kind, called by some Authors Oculus Mundi, being dry and cloudy, weighed |
5 gr.200256 |
| The same being put under Water, for a Night and somewhat more, became transparent, and the Superficies being wiped dry, weighed |
6.3256 |
| The Difference between these two Weights | 0.50256 |
| The same Stone kept out of Water one Day, and becoming cloudy again, weighed |
5.225256 |
| which was more than the first Weight | 0.26256 |
| The same being kept dry two Days longer, weighed | 5.202256 |
| which was less than at first | 0.7256 |
| Being put under Water for a Night, and becoming again transparent, and wiped dry, the Weight was |
6.3256 |
| the same with the first, after putting in Water, and more than the last Weight, after keeping of it dry |
0.57256 |
Being kept dry some time longer, it did not grow sensibly lighter.
Another Stone, of the same Kind; being variegated with milky, white, and grey, like some Sort of Agates, while it lay under Water, was always invironed with little Bubbles, such as appear in Water before boiling, next the Sides of the Vessel.
There
