The life of President Edwards: . emains to be explained, is—How the freezing, which fills up so many ofi^ pores, should yet make it hghter, or more rare ? Which will not bedifficult, from the same principles. For according to these principles, it isnot at all probable, that the mass of water should be all congealed atonce, in one instant, so that every pore will be filled up withthomat once;but that, as these particles gradually work into the water, they will belaid hold of, and locked together by parcels, as thecongealing particles getin, till at length, the whole mass is made fast. The mass
The life of President Edwards: . emains to be explained, is—How the freezing, which fills up so many ofi^ pores, should yet make it hghter, or more rare ? Which will not bedifficult, from the same principles. For according to these principles, it isnot at all probable, that the mass of water should be all congealed atonce, in one instant, so that every pore will be filled up withthomat once;but that, as these particles gradually work into the water, they will belaid hold of, and locked together by parcels, as thecongealing particles getin, till at length, the whole mass is made fast. The mass is stiffened byparcels; which parcels, being made hard ^j,. ^ j;,^^ 2_ and stubborn, will not accommodate ° * themselves to the vacuities that shall bemade by the invincible drawing of parti-cles out of their seats, by these frigidatoms : whereby, a multitude of vacuitieswill unavoidably be made. Supposing aparcel of particles, consisting of nineteen,should be catched. and fastened as they lie in this form, Fig. 1. It is evi-. T52 APPHNDIX. dent, that, by the force of the attraction of the particles, that are betweenin their pores, these frigid particles being supposed to be flexible and plia-ble, they will be drawn into such a figure as this, Fig. 2; and this may bedone, with invincible force. And by this means, vacuities will be left in the places from whencethese particles were drawn, except other particles of water come in theirroom. But perhaps the particles in the neighbourhood, are stiffening to-gether at the same time; and, instead of coming to fill up the vacuities,made by the congealing of this parcel, they are drawn farther off them-selves, and make the vacuity greater. Besides, the slides of the parcel, asit conforms itself to the figure, (Fig. 2.) will unavoidably thrust out theneighbouiing particles, from their places, which, perhaps, are congealedtogether into stiff parcels. Wherefore, this thrusting must necessarilycause vacuities in another direction, by dis
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