So Savery guided, l. 249. Captain Savery first applied the pressure of the atmosphere to raise water in consequence of a vacuum previously produced by the condensation of steam, though the Marquis of Worcester had before proposed to use for this purpose the expansive power of steam; see Botanic Garden, Vol. I. Canto I. l. 253. Note.[Back to Canto]
The waving flax, l. 254. Flax is said to have been first discovered on the banks of the Nile, and Isis to have been the inventress of spinning and weaving.[Back to Canto]
So Arkwright taught, l. 261. See Botanic Garden, Vol. II. Canto II. l. 87, Note.[Back to Canto]
The immortal Press, l. 270. The discovery of the art of printing has had so great influence on human affairs, that from thence may be dated a new æra in the history of mankind. As by the diffusion of general knowledge, both of the arts of taste and of useful sciences, the public mind has become improved to so great a degree, that though new impositions have been perpetually produced, the arts of detecting them have improved with greater rapidity. Hence since the introduction of printing, superstition has been much lessened by the reformation of religion; and necromancy, astrology, chiromancy, witchcraft, and vampyrism, have vanished from all classes of society; though some are still so weak in the present enlightened times as to believe in the prodigies of animal magnetism, and of metallic tractors; by this general diffusion of knowledge, if the liberty of the press be preserved, mankind will not be liable in this part of the world to sink into such abject slavery as exists at this day in China.[Back to Canto]
Her expressive verb, l. 294. The verb, or the word, has been so called from its being the most expressive term in all languages; as it suggests the ideas of existence, action or suffering, and of time; see the Note on Canto III. [l. 371], of this work.[Back to Canto]
Call'd by thy voice, l. 299. The numerous trains of associated ideas are divided by Mr. Hume into three classes, which he has termed contiguity, causation, and resemblance. Nor should we wonder to find them thus connected together, since it is the business of our lives to dispose them into these three classes; and we become valuable to ourselves and our friends as we succeed in it. Those who have combined an extensive class of ideas by the contiguity of time or place, are men learned in the history of mankind, and of the sciences they have cultivated. Those who have connected a great class of ideas of resemblances, possess the source of the ornaments of poetry and oratory, and of all rational analogy. While those who have connected great classes of ideas of causation, are furnished with the powers of producing effects. These are the men of active wisdom who lead armies to victory, and kingdoms to prosperity; or discover and improve the sciences which meliorate and adorn the condition of humanity.[Back to Canto]
Polish'd wit bestows, l. 309. Mr. Locke defines wit to consist of an assemblage of ideas, brought together with quickness and variety, wherein can be found any resemblance or congruity, thereby to make up pleasant pictures and agreeable visions in the fancy. To which Mr. Addison adds, that these must occasion surprise as well as delight; Spectator, Vol. I. No. LXII. See Note on Canto III. [l. 145]. and Additional Note, [VII. 3]. Perhaps wit in the extended use of the word may mean to express all kinds of fine writing, as the word Taste is applied to all agreeable visible objects, and thus wit may mean descriptive sublimity, beauty, the pathetic, or ridiculous, but when used in the confined sense, as by Mr. Locke and Mr. Addison as above, it may probably be better defined a combination of ideas with agreeable novelty, as this may be effected by opposition as well as by resemblance.[Back to Canto]
The goaded fibre, l. 339. Old age consists in the inaptitude to motion from the inirritability of the system, and the consequent want of fibrous contraction; see Additional Note [VII].[Back to Canto]
Ten thousand seeds, l. 349. The fertility of plants in respect to seeds is often remarkable; from one root in one summer the seeds of zea, maize, amount to 2000; of inula, elecampane, to 3000; of helianthus, sunflower, to 4000; of papaver, poppy, 32000; of nicotiana, tobacco, to 40320; to this must be added the perennial roots, and the buds. Buds, which are so many herbs, in one tree, the trunk of which does not exceed a span in thickness, frequently amount to 10000; Lin. Phil. Bot. p. 86.[Back to Canto]
The countless Aphides, l. 351. The aphises, pucerons, or vine-fretters, are hatched from an egg in the early spring, and are all called females, as they produce a living offspring about once in a fortnight to the ninth generation, which are also all of them females; then males are also produced, and by their intercourse the females become oviparous, and deposite their eggs on the branches, or in the bark to be hatched in the ensuing spring.