Two discourses of the objects, pleasures and advantages, I. of science: II. of political science / By Henry Lord Brougham.
- Henry Brougham, 1st Baron Brougham and Vaux
- Date:
- 1846
Licence: Public Domain Mark
Credit: Two discourses of the objects, pleasures and advantages, I. of science: II. of political science / By Henry Lord Brougham. Source: Wellcome Collection.
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![which Bees reach the fine dust and juices of hollowr flowers, like the honeysuckle, and some kinds off long fox-glove, which are too narrow for them too enter. They fill up the mouth of the flower withh their bodies, and suck out the air, or at least aa large part of it; this makes the soft sides of thee flower close, and squeezes the dust and juice towardss the insect as well as a hand could do, if applied too the outside. We may remember this pressure or weight of thee atmosphere as shown by the barometer and the suck-- ing-pump. Its weight is near fifteen pounds on everyy square inch, so that if we could entirely squeeze outt the air between our two hands, they would clingy together with a force equal to the pressure of doubles this weight, because the air would press upon bothy hands ; and if we could contrive to suck or squeezes out the air between one hand and the wall, the handi would stick fast to the wall, being pressed om itt with the weight of above two hundredweight, thatt is, near fifteen pounds on every square inch of thes hand. Now, by a late most curious discovery off Sir Everard Home, the distinguished anatomist, it iss found that this is the very process by which Flies and] other insects of a similar description are enabled] to walk up perpendicular surfaces, however smooth, , as the sides of walls and panes of glass in windows, , and to walk as easily along the ceiling of a room: with their bodies downwards and their feet over:](https://iiif.wellcomecollection.org/image/b22026575_0082.jp2/full/800%2C/0/default.jpg)
