ANTONII DE LEEUWENHOECK.

the base of others, and they were few, was square, as Fig. Q; in other few, the base was irregularly quadrilateral, as Fig. R No. 2, which last two shapes I judged had not been rightly formed due to a lack of sufficient material on all sides, and thus had emerged by accident.

A diagram shows three geometric shapes: P (a square pyramid), Q (a square base), and R (an irregular quadrilateral base).

Note. The size of these particles is not to be compared with the particles of salt contained in simple vinegar and mentioned before, because these particles of salt are depicted by a microscope magnifying much more than that by which the former were formed and described, and there was no other way permitted for me to detect their structure. This number of saline particles was huge, inasmuch as, according to my rough calculation or computation, it would amount to more than six thousand particles in the size of one small drop, which equaled two grains of barley, and what especially snatched me into admiration was that almost all these particles were of the same size, such a thing as I had never observed in other types of salts. I also poured out the vinegar that contained the crab stones at the time when the effervescence was still happening and many bubbles were being emitted, and in that vinegar, I discovered an infinite number of saline particles, the bottom of which was quadrangular, as was said before: nor was it permitted, however, to observe any such saline particles as I had previously proposed to be contained in vinegar in great abundance before the crab stones had been injected. When the effervescence was finished and the bubbles had ceased for the most part, I took into my mouth a third part of this vinegar, as much as one finger takes in measures, so that the flavor might be known to me, and I was unable to detect any acidity at all, but a certain bitter flavor, which to me