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Would they have lent me their aid Wytheimler, Grosthuys, Scheele, Stamback, Wagner? "To make men of science agree men of science agree! the Emperor should have made peace; in time of peace, perhaps, he would have taken an interest in my quarrel with Sinard! Sinard, my friend, my pupil, become my antagonist, my enemy! He, a man of genius "Yes, he is a man of genius.
Veyergang fortunate in having such a treasure in the house, and sighed over her own inability to find just such another. But how unfortunate it was Mrs. Scheele was extremely sorry they had just engaged another nurse! "Fancy!" exclaimed Mrs. Scheele, when her husband came down from his office, "there is a revolution at the Veyergangs', and that high and mighty Nurse Barbara has got her dismissal.
Close on its heels followed the momentous discovery of the principal gases by Scheele and Priestly, the composition of water by Cavendish, and the doctrine of latent heat by Black.
Sweden honored and rewarded Scheele and Bergman for their efforts; England received the intellectuality of Cavendish with less appreciation than the Continent, and a fanatical mob drove Priestley out of the country; while France, by sending Lavoisier to the guillotine, demonstrated how dangerous it was, at that time at least, for an intelligent Frenchman to serve his fellowman and his country well.
About the same time, Scheele was obscurely working in the same direction in a remote Swedish village; and he discovered several new gases, with no more effective apparatus at his command than a few apothecaries' vials and pigs' bladders. Sir Humphry Davy, when an apothecary's apprentice, performed his first experiments with instruments of the rudest description.
His escape from injury seems almost miraculous; for his experiments, which were most elaborate, extended over a considerable period of time, during which he seems to have handled this chemical with impunity. While only forty years of age and just at the zenith of his fame, Scheele was stricken by a fatal illness, probably induced by his ceaseless labor and exposure.
In this book, also, he shows that air is composed chiefly of oxygen and nitrogen gas. Early in his experimental career Scheele undertook the solution of the composition of black oxide of manganese, a substance that had long puzzled the chemists.
The answer of the experimentalist is, "Endeavour to make it useful." When Scheele discovered this substance, it appeared to have no use; it was in its infancy and useless state, but having grown up to maturity, witness its powers, and see what endeavours to make it useful have done.
In this epoch of chemical discoveries England had produced such mental giants and pioneers in science as Black, Priestley, and Cavendish; Sweden had given the world Scheele and Bergman, whose work, added to that of their English confreres, had laid the broad base of chemistry as a science; but it was for France to produce a man who gave the final touches to the broad but rough workmanship of its foundation, and establish it as the science of modern chemistry.
This analogy may even be extended to the growing seeds of vegetables; which were shewn by Mr. Scheele to require a renovation of the air over the water, in which they were confined.
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