Page from "<i>Account of the Glass Drops</i>" by Sir Robert Moray, as given to The Royal Society in 1661.
<a href="https://en.wikipedia.org/wiki/Robert_Moray" class="extiw" title="en:Robert Moray">Sir Robert Moray</a>
<a rel="nofollow" class="external text" href="https://pictures.royalsociety.org/image-rs-15429">The Royal Society</a> (<a rel="nofollow" class="external text" href="https://archive.org/details/TheArtOfGlassWhereinAreShownTheWayesToMakeAndColourGlass/page/n386">archived</a>)