BY MOLECULAR COALESCENCE. 9 
nebulosity, at the line of union of the two solutions, 
showing that the particles of carbonate of lime, when 
they first come into existence, are too minute to admit 
of being distinguished individually by the highest powers 
of the microscope. (This examination was made with one 
of Ross’s best lenses of } of an inch focus. See Fig. 1, a.) 
Fig. 1. 
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oho 38% 92,00 ° 9° 
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Tn a few hours exquisitely minute spherules, too small to 
allow of accurate measurement, can be seen in the nebu- 
lous part, a portion of which has disappeared, and is 
replaced by these spherical particles. (See Fig. 1, 6.) 
Examined at a later period, dumb-bell-like bodies will 
have made their appearance, and with them elliptical par- 
