Page:A Practical Treatise on Brewing (4th ed.).djvu/208

In this case, sprinkle four barrels over the grains, and let it run briskly as soon as it disappears through the grains. The first worts, having now boiled one hour and fifteen minutes, may be discharged or turned out, as it is termed, from the copper for cooling. Get your second worts up as soon as possible, rouse them well, and take a sample for weighing; add the hops from first worts when drained. In the first worts we had twenty-one barrels in the copper, at 26 lbs., when reduced to a temperature of 60°.

Multiply 26 lbs. by 21bls., making	546
Deduct 10 per cent.....................................................................................................................................................................................................................................................	55
Leaving, of real gravity in the gyle-tun	491

After boiling, and the loss in quantity by evaporation and condensation on the coolers, we find that we should have in the gyle-tun 16 barrels at 31 lbs. gravity, or 496.

On gauging the second worts in the copper, we find 17 barrels of 8 lbs. gravity, at 60°.

Multiply 17 by 8, making	136
Deduct, as before, 10 per cent.....................................................................................................................................................................................................................................................	14
	122
Add 28 lbs. from hops of 1st worts	28
Add gravity of first worts....................................................................................................................................................................................................................................................	496
		Br.	Fir.
Div. by required grav. pr. bl.	24)646	(26	3
leaving out fractional parts.