CONTENTS. 
Introductory observations 
Process for making Artificial Caleuli 
Mode of mounting Artificial Calculi 
Explanation of the process of Coalescence 
Attraction of Gravitation the cause of Coalescence 
Molecular agitation 
Molecular disintegration 
Dumb-bell-shaped Caleuli ‘ 
Elliptical Caleuli becoming spherical and ieaated 
Density of Calculi varies as the distance from the centre 
Another cause of Lamination 
Flat appearance of Calculi under the miceeohe 
Calculi formed by the coalescence of several small ones 
Inertia the cause of Lamination 
. Coalescence of Large Calculi similarly fomenteds 
Radiating lines in Calculi 
Nature and cause of Crystallization 
Rectilinear arrangement to the effect of a separating fore : 
Tenacity or attraction of tenacity 
Calculi composed of carbonate of lime and tele Pisin 
Change of the crystalline into the globular form 
Effect of globular carbonate on glass 
Attraction of tenacity neutralized 
Change from the globular to the crystalline ani by heat 
