id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
38928	M'Pherson, J. G. (John Gordon)	Meteorology; or, Weather Explained			.txt	text/plain	32561	1619	72	dust in the air and little water-vapour present, there is an brine-particles, driven into the air as fog forms above the ocean surface, burnt in filtered air, intense fog is produced when water-vapour is words, a cubic inch of the air contained 200,000 dust-particles--nearly a 12,000 dust-particles in a cubic inch of the air: whereas in the following and 60,000 dust-particles to the cubic inch of air were registered; but in wind the dust-particles reached the low number of 300 per cubic inch, the The number of dust-particles in the air which become centres of of condensation of the water-vapour so as to form a cloud-particle; and a a fog, the dust-particles in the air have been fully clothed with July afternoon, counted 4000 dust-particles in a cubic inch of the air; number of dust-particles in the air of large towns. determines the number of dust-particles in the air.	./cache/38928.txt	./txt/38928.txt