of various kinds, he must be obliged, in proportion, to carry a greater bundle of things upon his back, unless he can afford one or two strong servants to attend him. I have often beheld two of those sages, almost sinking under the weight of their packs, like pedlars among us; who, when they met in the street, would lay down their loads, open their sacks, and hold conversation for an hour together; then put up their implements, help each other to resume their burdens, and take their leave.
But for short conversations, a man may carry implements in his pockets, and under his arms, enough to supply him; and in his house, he cannot be at a loss. Therefore the room, where company meet who practise this art, is full of all things, ready at hand, requisite to furnish matter for this kind of artificial converse.
Another great advantage proposed by this invention, was, that it would serve as a universal language, to be understood in all civilized nations, whose goods and utensils are generally of the same kind, or nearly resembling, so that their uses might easily be comprehended. And thus, ambassadors would be qualified to treat with foreign princes, or ministers of state, to whose tongues they were utter strangers.
I was at the mathematical school, where the master taught his pupils, after a method, scarce imaginable to us in Europe. The proposition, and demonstration, were fairly, written on a thin wafer, with ink composed of a cephalick tincture. This, the student was to swallow upon a fasting stomach, and for three days following, eat nothing but bread and water. As the wafer digested, the tincture
