Reflections on the Communication of Motion by Impact and GravityBy the RevIsaac Milner, MAFellow of Queen's College, CambridgeCommunicated by Anthony Shepherd, DDFRSand Plumian Professor at Cambridge . nce our adverfaries. Some writers have con-iidered this queftion as entirely verbal, and have afFecStedto treat the advocates on both fides with the greatefl: con-tempt. Such perfons fave themfelves a great deal oftrouble, and have the credit of feeing farther intothe controverfy than others; but after all, I am afraidthe pra6tical mechanic will receive little information orfecurity from fuch fp


Reflections on the Communication of Motion by Impact and GravityBy the RevIsaac Milner, MAFellow of Queen's College, CambridgeCommunicated by Anthony Shepherd, DDFRSand Plumian Professor at Cambridge . nce our adverfaries. Some writers have con-iidered this queftion as entirely verbal, and have afFecStedto treat the advocates on both fides with the greatefl: con-tempt. Such perfons fave themfelves a great deal oftrouble, and have the credit of feeing farther intothe controverfy than others; but after all, I am afraidthe pra6tical mechanic will receive little information orfecurity from fuch fpeculations. Propriety of thefe matters is not all we want. When a plan is pro-pofed for execution, and a certain effect predicted, thegrand obje6l is, how to form a fure judgement before^hand of the event, in order td prevent unneceflary ex-pences; and I fliall think my time well employed, if thefe confi- Motion by ImpaB and Gravity^ 379 confiderations appear to have the leaft tendency to pro-mote fo iifefiil an end, in the opinion of that Society towhofe learned and zealous endeavours we owe the veryfirfl: important difcoveries in the year 1668, concerningthe coUifions of Vol- LXVIIL C c c


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