Employment for the microscope ... I. An examination of salts and saline substances ... also ... considerations on gems, poisons ... and ... other subjects. II. An account of various animalcules ... and ... other ... discoveries ... Likewise a description of the microscope used / In two parts : illustrated with seventeen copper plates by Henry Baker.

Henry Baker

Date:: 1753

Credit: Employment for the microscope ... I. An examination of salts and saline substances ... also ... considerations on gems, poisons ... and ... other subjects. II. An account of various animalcules ... and ... other ... discoveries ... Likewise a description of the microscope used / In two parts : illustrated with seventeen copper plates by Henry Baker. Source: Wellcome Collection.

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[26] E R I E S. DO not Attraction and Repulfion feem to be the principal aCtive Powers whereby the natural Changes in Bodies are produced ? Are not thefe Powers inherent, proba¬ bly, in all Matter, however their Agency may be fufpended, diminished, augmented, or other wife diverfifyed ? May we not fuppofe, that by the firffc of thefe Powers the original Particles of Matter are brought together and conjoyned, in the Formation of rnoft compounded Bo¬ dies ? and does not the Deftrudtion of fuclj Bodies, or the Separation of their compo¬ nent Particles, feem probably greatly owing to the Latter ? Is there not Reafon to believe, that the Particles of Matter constituting Gold, Stone, Wood, Flefh, &c. are different from each other ab Origine ; and, confequently, that there are different Kinds of fimple mate¬ rial Particles ? Muft not thefe Particles (however un¬ conceivable their Minutenefs be) have fome determined Figures and Sizes ? May not fuch Figures and Sizes be different, and indued with different Degrees of the at¬ tractive or repulfive Force : and may not the Difference in Bodies as to Coherence, Soli-

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