systematical

By perpetual practice, language had, in his mind, a systematical arrangement; having always the same use for words, he had words so selected and combined as to be ready at his call.

From The Works of Samuel Johnson, LL.D. in Nine Volumes Volume the Eighth: The Lives of the Poets, Volume II by Samuel Johnson

Sciences, in themselves systematical and coherent, are not very properly broken into such fortuitous distributions.

From The Works of Samuel Johnson, Volume 05 Miscellaneous Pieces by Samuel Johnson

What definite idea can a body attach to such expressions as "methodical Jack o' Dandy," or "a systematical Will o' the Wisp"?

From The Works of Edgar Allan Poe — Volume 4 by Edgar Allan Poe

Latin. a map, as it were, of the language spread open before us, and feel sure that change of spelling meant systematical change of pronunciation: coira, coera, cura; aiquos, aequos, aecus; queicumque, quicumque, etc., etc.”

From The Roman Pronunciation of Latin Why we use it and how to use it by Frances Ellen Lord

It is then to put her commerce with us on systematical ground, and under safe cover, that it behoves Great Britain to enter into treaty.

From Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 1 by Thomas Jefferson Randolph