Take mother of Pearle 2 pound, small red Corall di. pound, Antimony crude 4 ounces, and make a grosse powder of them. _To make the single perpendicular glasse, ascending with heat, and descending with cold._ Prepare two glasses after the fashion of the figure A, B, and C, D: let the glasse A, B, haue a small pinhole at or about the top of all, and let the glasse C, D, haue besides the hole at the top, another hole at the bottom with a short pipe. Prouide such a frame for this as you did before for the other; then put the glasses into it, fasten the bottom glasse to the bottom of the frame, hauing a hole at the bottom, thorow which the pipe of the glasse C, D, may passe, fit a cork unto it: then lute the two glasses together, so that no ayre may passe between the joyning; divide then the shank into so many degrees as you please, and figure it as before I taught you, then with the heat of a candle, rarifie the ayre in the glasse C, D, and fill it a third part full of water, and then put the cork fast in. Note that if the first heating of the glasse rayse not the water unto your content, you must repeat it over and over, untill it doe: when it is sufficient, then stop the cork in very firm, that no water may come out, and it is made. [Illustration] _How to make the double perpendicular glasse._ Prepare two glasses like unto the figure marked with the letters A, B, the one of them must have a small hole in or about the head thereof. Prepare likewise for the bottom a vessell of the fashion of the figure G, H, having two mouthes, at each end one, also a cocke in the middle, as K: divide then the shank of the glasse without the hole in the top, into equall parts, and set figures upon it: next lute them both fast into the necks of the bottom vessell. (But first remember to put them in a frame:) when the cement is dry turn the cock of the bottom vessell, and rarify the ayre in the glasse that hath no hole at the top; then set the bottom vessell a little way into a vessell filled with water, and it will suck up the water as it cooleth, when the bottom vessell is full, also the water mounted in that top glasse without a vent, up to a fitting degree; (the temper of the weather regarded) then depresse (but gently) the glasses into the vessell of water, untill the water be come up into the glasse with the vent at the top sufficiently, that is, so that in both the glasses may bee contained so much water as will fill the shank of one, and about 2 or 3 degrees of the other; then turne the cock, and take away the vessell of water from under them, let them down, and fasten the bottom vessell unto the bottom of the frame, and make a rock about it, or else what other works you please, that the art may not be discerned. Lastly, set figures upon both, but first upon that without the vent, beginning from the bottom, and proceeding upwards, then lay your hand upon the head of