[D] The Scandinavians, and all the peoples who are loosely called German tribes, High-German, Low-German, and what-not, are generally regarded as branches of a great Aryan stem, which is called the Teutonic race; and some of my philological readers, should any such honor these unpretending papers with their attention, may be surprised, and even offended, at my omission of any mention of the great Teutonic family. As to this, my only defense, or rather my only excuse, is that I have been unable to convince myself of the existence of any such branch as the Teutonic, antecedent to the Gothic, of which the Mæso-Goths were an early offshoot. I can not see that the Teutones of the Roman historians represent an elder, dominant, or parent branch of the Aryan race of which the Goths were a younger and minor. As to the word German, and its use in “German tribes,” “German dialects,” every scholar knows that it is not an indigenous name, but that it was imposed from without, by strangers, upon the people who bear it, who call themselves Deutch; and that this name was in effect territorial, meaning all the people, of whatever race, who lived within or beyond certain boundaries. As to the identity of origin in _Deu-tch_ and Teu-ton, that seems to me to be by no means clearly made out. For Teutonic race I would substitute Gothic. The question from the present point of view is happily not of serious or intrinsic importance. HOME STUDIES IN CHEMISTRY AND PHYSICS. BY PROF. J. T. EDWARDS, D.D. Director of the Chautauqua School of Experimental Science. In our day science invades the kitchen. Knowledge knocks at the sitting room door. Literature and art visit the parlor of even our humble homes. To do anything in furtherance of popular education is a delight. Mine be the task of making the laboratory and the home better acquainted. The limitations of an article for THE CHAUTAUQUAN cause the first embarrassment. One must at once become an eclectic, and select wisely the _best_ from a wide field. The next difficulty is to give coherency and classification to the truths selected. Upon what golden cord shall we arrange the shining truths? Let us use an ancient, though incorrect classification of elements: Water, air, earth, fire, adding another, organisms. Indeed, this is about the division of matter which the common people make to-day, although chemists tell us that neither of these is an element, and that the simple, indivisible substances in nature are sixty-six in number. As chemistry and physics are so closely related, we shall consider each of these topics from the standpoint of both these sciences. This will call for ten articles, on the following subjects: Chemistry of Water; Physics of Water; Chemistry of Air; Physics of Air; Chemistry of Fire; Physics of Fire; Chemistry of Earth; Physics of Earth; Chemistry of Organisms; Physics of Organisms. CHEMISTRY OF WATER. H₂O. [Illustration: FORMS OF WATER CRYSTALLIZED.]