54); the tradition in which he and the Jordan figure so largely is not original, and is therefore worthless; at the same time it is true that their baptismal praxis and its interpretation place them in the same religious group with the Hemerobaptists of Eusebius (H.
Passing over the invention of logarithms by John Napier, and their development by Henry Briggs and others, the next author of moment was an Englishman, Thomas Harriot, whose algebra (Artis analyticae praxis) was published posthumously by Walter Warner in 1631.
Kopp. The following are his most important separate publications, many of which were translated into English and French almost as soon as they appeared: Anleitung zur Analyse der organischen Korper (1837); Die Chemie in ihrer Anwendung auf Agrikultur and Physiologic (1840); Die Thier-Chemie oder die organische Chemie in ihrer Anwendung auf Physiologie and Pathologie (1842); Handbuch der organischen Chemie mit Rficksicht auf Pharmazie (1843); Chemische Briefe (1844); Chemische Untersuchungen fiber das Fleisch and seine Zubereitung zum Nahrungsmittel (1847); Die Grundsdtze der Agrikultur-Chemie (1855); Ober Theorie and Praxis in der Landwirthschaft (1856); Naturwissenschaftliche Briefe fiber die moderne Landwirthschaft (1859).
It is here that the differences between the four schools come most into notice: the Hanifite praxis is the least rigorous, then the Shafi`ite; the Hanbalites, whose system is the strictest, have practically disappeared in the Malikites.
Of the formal-symbolic logic all that falls to be said here is, that from the point of view of logic as a whole, it is to be regarded as a legitimate praxis as long as it shows itself aware of the sense in which alone form is susceptible of abstraction, and is aware that in itself it offers no solution of the logical problem.