face would have an altitude of about 650 feet above sea level. the can, and a rod passing therefrom through the lid is pro- Tt would cover with one continuous surface the labyrinth of vided with a knob. The slide being opened, pressure on streams and lakes which now occupy the Mackenzie Valley. the… … which is simply constructed, occupies little space, where opium is sold,and many of them are said and can be easily extended. It is contained in a to average $75.a day. If such is the fact the sale of M. JOBERT’S NEW TELESCOPE OF SHORT FOCUS. box provided with an extensible part which can be this…
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-165-43.webp)
