With the systematic study of the Latin, and to a slight extent also of the Greek classics, he conjoined that of logic in the prolix system of Crousaz; and he further invigorated his reasoning powers, as well as enlarged his knowledge of metaphysics and jurisprudence, by the perusal of Locke, Grotius and Montesquieu.
Among his writings are: Introduction to the Study of Federal Government (1890), Formation of the Union (1892, in the Epochs of American History series), Practical Essays on American Government (1893), Studies in American Education (1895), Guide to the Study of American History (with Edward Channing, 1897), Salmon Portland Chase (1899, in the American Statesman series), Foundations of American Foreign Policy (1901), Actual Government (1903), Slavery and Abolition (1906, the volume in the American Nation series dealing with the period 1831-1841), National Ideals Historically Traced (1907), the 26th volume of the American Nation series, and many historical pamphlets and articles.
The study of the physical properties of fluids in general constitutes the science of hydromechanics, and their applications in the arts is termed hydraulics; the special science dealing with the physical properties of gases is named pneumatics.
Dissatisfied with the meagre philosophies of his Italian teachers, he went to Toledo to study in Spanish Moslem schools, then so famous as depositories and interpreters of ancient wisdom; and, having thus acquired a knowledge of the Arabic language, he appears to have devoted the remainder of his life to the business of making Latin translations from its literature.
She has made considerable progress in the study of arithmetic.
A Bureau of Labor Statistics (1879), whose members are styled Commissioners of Labor, makes a study of economic and financial problems and publishes biennial reports; a Mining Board (1883) and an inspector of factories and workshops (since 1893) have for their duty the enforcement of labour legislation.
In 1860 he expanded his Norrisian essay into an Introduction to the Study of the Gospels, a work remarkable for insight and minuteness of study, as well as for reverential treatment combined with considerable freedom from traditional lines.
Though ardent in his pastoral work, he found time for diligent study of Hebrew and other Oriental languages, undertaken chiefly with the view of qualifying himself for the great work of his life, his Commentary on the Holy Scriptures (8 vols., 1810-1826).
Upon our knowledge of its minute structure or cytology, combined with a study of its physiological activities, depends the ultimate solution of all the important problems of nutrition.
He followed up his Coptic studies with Aegyptiaca (1883), and published many minor contributions to the study of oriental languages in Gesammelte Abhandlungen (1866), Symmicta (i.