The author admits that such an objection would have great reasonableness, and that Guericke's feat is a little hard to class.
Hawkesbee constructed a glass machine that was an improvement over that of Guericke.
Guericke's house and family were saved, but the sufferings of the city were not yet ended.
Here he devised several modifications of the instruments of Guericke, and printed a description of them.
Guericke first observed the repulsive power of electricity, and the light and noise produced by it.
Of the two, Guericke seems to have covered a wider field, and to have been more distinctly an inventor.
Guericke was called to perform his experiments before the Emperor.
The experiments which Guericke made with his air-pump aroused the attention of the princes, and especially Emperor Ferdinand.
Guericke entered the service of Saxony, and was again made mayor of the city.
Guericke's study of air-pressure led him to make a water barometer (Fig. 6).