...have met with many more (and I believe fome of my ingenious Friends do expert more) but that I lie under two inconveniences. One the want of an open...Pole of 100 or more feet, to raife my long Glafs to fiich an height, as to fee the Heavenly Bodies above the thick Vapours j which much obfcure all Objects...

...Royal Society : with characteristic simplicity he lays before the public his " chief inconvenience, the want of a long pole, of 100 or more feet, to raise my long glass to such an height as to see the heavenly bodies above the thick vapours But, as...

...again by William Derham, who explained why he was returning it in 1741: "The chief inconvenience is the want of a long pole of 100 or more feet, to raise my long glass to such a height as to see the heavenly bodies above the thick vapours," and he...