By using urea, guanidine, thiourea and related compounds instead of amidines, one obtains the uracils.
This method obtains when yeast is vigorously fermenting a saccharine solution.
He obtains a magic glass cage, yoked with eight griffins, flies through the clouds, and, thanks to enchanters who know the language of birds, gets information as to their manners and customs, and ultimately receives their submission.
A similar condition obtains in the steamengine, in which a great rate of working necessitates the dissipation of a large amount of energy.
In steam cranes much the same principle obtains in proportioning the boiler; e.g.