The neutralization of acids by bases affords many illustrations, known even before the atomic theory, of the truth of the statement.
Humboldt's concrete illustrations and the remarkable power of his personality enabled him to enforce these principles in a way that produced an immediate and lasting effect.
In 1832 Edward Lear, afterwards well known as a humorist, brought out his Illustrations of the Family of Psittacidae, a volume which deserves especial notice from the extreme fidelity to nature and the great artistic skill with which the figures were executed.
In 1828 James Wilson (author of the article Ornithology in the 7th and Wilson 8th editions of the present work) began, under the title of Illustrations of Zoology, the publication of a series of his own drawings (which he did not, however, himself engrave) with corresponding letterpress.
Both are intended as illustrations of doctrines taught in the schools of Babylonia; the former to explain that only the favourites of the gods can hope under exceptional circumstances to enjoy life everlasting; the latter to emphasize the impossibility for ordinary mortals to escape from the inactive shadowy existence led by the dead, and to inculcate the duty of proper care for the dead.
The plates of De Rossi, Perret, and, indeed, all illustrations of the catacombs, exhibit frequent examples of the same destructive superstition.
He gave amusing illustrations of the absurdity and poverty of the current pulpit oratory of his day, some of them being taken from the sermons of his own father.
His knowledge of Roman and foreign law, and the general width of his education, freed him from the danger of relying too exclusively upon narrow precedents, and afforded him a storehouse of principles and illustrations, while the grasp and acuteness of his intellect enabled him to put his judgments in a form which almost always commanded assent.
Basing his work on the principles of Ptolemy, he brings together illustrations from the most recent travellers, and does not hesitate to take as illustrative examples the familiar city of Oxford and his native county of Devon.
That chapter of comparative anatomy (together with other anatomical details, for which see the separate articles) is now dealt with in the article Skull; here only the most avine features are alluded to, and since some of Parker's original illustrations have been retained, the description has been shortened considerably.
In Ciampinus, Vetera Monumenta (Rome, 1747), plates xii., xiii., are several illustrations of actual examples.
A general popular description of Russia entitled Rossiya, containing excellent geographical, geological and other descriptions of separate regions, and very well-chosen illustrations, was begun in 1899 under the editorship of V.
In these illustrations, which gave an impluse to the production of "enblems" and were copied in the English version, there appears a humour quite absent from the text.
In 1912, in collaboration with his wife, he published as a sumptuous folio, with reproductions of the illustrations of the first edition (1556), an English translation of Agricola's De Re Metallica.
These illustrations are comparatively simple; it would have been easy to select others of a more complicated nature, but all evidently connected with the visits of insects and the cross fertilization of the flower.
His immense learning served him rather as a storehouse of illustrations, or as an armoury out of which he could choose the fittest weapon for discomfiting on opponent, than as a quarry furnishing him with material for building up a completely designed and enduring edifice of systematized truth.
With all the majesty and stately elaboration and musical rhythm of Milton's finest prose, Taylor's styleis relieved and brightened by an astonishing variety of felicitous illustrations, ranging from the most homely and terse to the most dignified and elaborate.
In our own day we have had many illustrations of the manner in which special circumstances may at once bring an almost unnoticed series of scientific investigations into direct and vital relation with the business world.
Possibly the present generation of English industrial history will furnish many illustrations of the law of diminishing returns.
All the materials for investigation, all the facts and figures from which illustrations are drawn, all methods of keeping accounts in England, assume the ordinary English tongue.
The French historian of art, Seroux d'Agincourt, 1825, by his copious illustrations, greatly facilitated the study of the architecture of the catacombs and the works of art contained in them.
In 1830 John Edward Gray commenced the Illustrations of Indian Zoology, a series of plates of vertebrated animals, G w but mostly of birds, from drawings, it is believed by dlcke..
Between 1831 and 1834 the same author brought out, in continuation of his Centurie, his Illustrations de zoologie with sixty plates, twenty of which represent birds.
In regard to South Africa, besides the well-known work of Le Vaillant already mentioned, there is the second volume of Sir Andrew Smith's Illustrations of the Zoology of South Africa (4to, 1838-1842), which is devoted to birds.
He conducted experiments to show that certain abstract forms and proportions are naturally pleasing to our senses, and gave some new illustrations of the working of aesthetic association.