Pythagoras:
"...all is number"

John Dalton (1803):
"...Atoms combine in simple numerical ratios..."

Prout's hypothesis, published anonymously in 1815:
"...the elements are different aggregates of the atoms of primordial hydrogen..."

Alexandre Émile Beguyer de Chancourtois (1862):
"...the properties of the elements are the properties of numbers..."

William Harkins (1921):
"...the ratio Z/(A - Z) never exceeds the value 0.62 in atomic species..."

Within this book, readers with an interest in mathematics, science or natural philosophy will find this expectation addressed...