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WE included some of those Insects in a Re∣ceiver with Water, which first live in Water, and then turn winged Insects; which swimming up and down a few days, put off their exuviae, and were perfect Gnats, which stood upon the Water, and liv'd a considerable time.
A digressive Experiment concerning the Expansion of Blood and other Animal Juices.
* 1.1Lamb's Blood preserv'd from Coagulation was conveigh'd into a Receiver in a wide mouth'd Glass: When the Receiver was pretty well exhausted, the more spirituous Parts of the Blood making their way out, rais'd the more clammy Parts into large Bubbles; and the Ex∣pansion of the volatile Parts were so vehement, that it boil'd over a Glass, of which it fill'd but ¼ part. Having included warm Milk in a Cylin∣der 5 Inches high, the Quantity of it being only 3 Ounces, it boil'd so impetuously when the Air was totally exhausted, that several parcels of it flew out of the Vessel. Gall discover'd a greater degree of Intumescence.
N. The design of these Experiments was to know, whether when the Air is drawn out of a Receiver, Animals may not be prejudic'd by an Expansion of the Humors in the Capillary Ves∣sels, as well as by an Absense of Air, since the Parts of them distending the Vessels may, stop Circulation, and cause Pains and Convulsions.