[441] One may easily perceive by what Pliny says, that the Romans had made a variety of observations and experiments on grinding and baking. By comparing his information with what we know at present, I have remarked two things, which, as they will perhaps be serviceable to those who hereafter may endeavour to illustrate Pliny, I shall lay before the reader. That author says, book xviii. ch. 9, “Quæ sicca moluntur plus farinæ reddunt; quæ salsa aqua sparsa, candidiorem medullam, verum plus retinent in furfure.” A question here arises, whether the corn was moistened before it was ground, and whether this was done with fresh or with salt water. If Pliny, as is probable, here means a thorough soaking, he is not mistaken; for it is certain that corn which has been exposed to much wet yields less meal, and that the meal, which is rather gray or reddish than white, will not keep long. The millers also are obliged, when corn has been much wetted, to put it through the mill oftener, because it is more difficult to be ground. It is true also, that when salt water is used for moistening corn, the meal becomes clammier and more difficult to be separated from the bran. It is well known that it is not proper to steep in salt water, malt which is to be ground for beer. On the other hand, a moderate soaking, which requires experience and attention, is useful, and is employed in preparing the finest kinds of flour, such as the Frankfort, Augsburg and Ulm speltmeal, which is exported to distant countries. There is another passage in the tenth chapter of the same book of Pliny, where he seems to recommend a thorough soaking of corn that is to be ground. “De ipsa ratione pisendi Magonis proponetur sententia: triticum ante perfundi aqua multa jubet, postea evalli, deinde sole siccatum pilo repeti.” I am of opinion that we have here the oldest account of the manner of making meal; that is, by pounding. This appears to me probable from the words immediately preceding, which I have above endeavoured to explain, and from the word _evalli_. I do not think that it ought to be translated _to winnow_, as Salmasius says, in Exercitat. Plinianæ, p. 907; but agree with Gesner in Thesaur. Steph., that it signifies to free the corn from the husk. The corn was first separated from the husks by pounding, which was more easily done after the grain had been soaked; the shelled corn was then soaked again, and by these means rendered so brittle that it was easily pounded to meal. The like method is employed when people make grits without a mill, only by pounding; a process mentioned by Krünitz in his Encyclopédie, vol. ix. p. 805. [442] Further information on this subject may be found collected in Krünitz, Encyclopédie, vol. iii. p. 334. According to experiments mentioned by Köhler, a hundred pounds of meal in Germany produce a hundred and fifty pounds of dough, and these a hundred and fifty-three pounds eleven and a half ounces of good bread.