142 PHENOMENA OF THE UNIVERSE. 



delay; but I find that the effect remains in this instance 

 the same ; the egg continues to draw, and with the same 

 force, the same quantity of water as if it had been forth 

 with put in after exsuction : so that when the hole was 

 opened out of the water, it drew in new air with an audible 

 sound, but the effect of farther delay I did not try. 



If bellows are suddenly raised and opened, and no breath 

 ing- place is given, they break ; for since so great a quantity 

 of air, as can fill the inside, rising suddenly from a level to 

 a height cannot be drawn through the narrow strait of the 

 beak of the bellows, and the air which is already within it 

 cannot be extended over such a space, the bellows must 

 break. 



HISTORY. 



If water be in a just quantity put into a glass, and the 

 water s ascent be marked, and a common cinder cleaned 

 through a sieve be put into the water and settle in it, you 

 will see the space occupied by the cinder at the bottom 

 ascend higher by one-fourth than the body of water had 

 ascended on the surface from the place before marked ; and 

 hence it is plain, that the water mixed with the cinder either 

 changes its orbit and contracts itself, or that it receives the 

 cinder within the hollow part of the water, since it by no 

 means expands itself in proportion to the cinder received. 

 But if you try this in the very lightest and thinnest sand 

 (but not calcined or reduced by fire), you will find that the 

 water rises at the surface according as the sand does at the 

 bottom. I think also that many infusions load the water, 

 and that it cannot extend according to the bulk of the 

 body received ; but I pass by the experiment on this subject. 



CAUTION. 



I do not confound the motion of succession, which is 

 called motion, to avoid the supposition of a vacuum, with 

 the motion of reception from extension. For these two 

 motions are in time and effect conjoined, but differ in their 

 proportion to each other, as will appear in the proper his 

 tory of the motion of succession. 



Air received through breathing becomes in a little while 

 vapour, so as to cover a lookingglass with a kind of steam, 

 or in winter time so as to be congealed about the beard. 

 But that dew, as it were, upon the bright blade of a sword, 

 or on a diamond, vanishes like a little cloud, so that the 

 polished body seems to purify itself. 



