one half thereof; I place the crucible on its side in a furnace provided with an opening, through which the mouth of the crucible projects about an inch. I then join to the mouth of the crucible an earthenware receiver, having an opening at its side to receive the open end of the crucible; this receiver is about half filled with water. I lute the joint with a mixture of sand and pipeclay. The receiver has a cover, which cover has a side continued upwards for containing water, with a chimney or tube in it to allow the escape of steam from water below. I then apply a fire around the crucible sufficient to raise the calomel in vapour, and force it through the mouth of the crucible into the receiver, where by the water while cold, or assisted by the steam when it becomes hot, it is instantly condensed into an impalpable powder. It is proper to wash the product over with water before it is dried, to rid it of any coarser particles which may form about the mouth of the crucible. My patent does not rest upon any particular shape or composition of the apparatus or any part thereof; but that which I claim as my discovery to be secured to me is the rendering of calomel or mercurius dulcis-fit for medicinal use by a sublimation or distillation so conducted as suddenly to condense the vapours, and prevent the concretion or crystallization of the product; thus rendering trituration, or what is commonly termed levigation, unnecessary.

In witness whereof, &c.

Specification

Specification of the Patent granted to EDWARD WEEKS, of Llaveny Hall, in the Parish of Henlau, in the County of Denbigh, North Wales, Gardener; for a forcing Frame on a new and improved Construction for raising and forcing of Cucumbers, Melons, Strawberries, and various other.. Fruits and Plants which require the Application of artificial Heat to rear or ripen the same,

Dated March 17, 1808.

With an Engraving,

To all to whom these presents shall come, &c. NOW KNOW YE, that in compliance with the said proviso, I the said Edward Weeks do hereby declare, that the said invention consists of a double frame of any conve nient size or dimensions, made chiefly of wood; the external frame covered with glass-lights, and constructed nearly similar to those in common use; the internal frame placed within the other, not made so deep, and without any covering, with a boarded bottom sufficiently strong for sustaining the weight of the earth or mould which is placed thereon for the growth and sustenance of the plants, and not on the dung or hot-bed as is the general practice; the internal frame is made deep enough to contain the proper quantity of earth or mould only, and the bottom thereof covers a less area than included within the external frame, so that a space or cavity is left af from two to six inches wide, or more at pleasure, between the ends and sides of the two frames for the admission of the heat to the plants, which passes thereto from the hot-bed through such spaces or cavities, and not to the roots of the plants through the earth or mould as in the common way. The internal frame is VOL, XIII-SECOND SERIES. M

so contrived, that by an apparatus hereinafter described, it can with the earth or mould on its bottom and the plants growing thereon, be raised or drawn up altogether within the external framé nearer to the glass-lights, and by that means the plants or fruits may be made to receive a greater and more beneficial influence from the rays of the sun, which is of material benefit and advantage to the growth and sustenance of the plants and to the ripening of the fruits. The internal frame with the earth and plants thereon may also be lowered at pleasure after being so drawn up, and be suspended between the glass and hot-beds, by which more or less heat may be admitted to the plants or fruits. The admission of the heat from the hot-bed through the cavities or spaces between the frames to the plants or fruits, is also a great advantage over the old mode, as it prevents the roots of the plants from being burnt or damaged by the superabundant heat arising from the hot-bed through the earth or mould; and the heat is by the new method admitted to the plants in a more natural way, which much facilitates their growth and the ripening of the fruits

thereon.

Fig. 1, (Plate V.) A plan of the two frames, AAAA sides and ends of the external frame; B gutter in front of said frame for carrying off rain-water from the glass→ lights, to prevent the same from injuring the lining of dung placed in front of the bed; C, iron spindles placed across the external frame at the junction of each pair of lights under the grooves in which the said lights slide; these spindles turn in iron staples or boxes let into the sides of the external frame, and to one end of each spindle within the said frame is fixed a rack wheel or wheels D, with dogs or stops to each wheel; from each end of

the

the said spindles are suspended chains, which chains being fastened to the sides or bottom of the internal frame, the said frame may be raised or lowered at pleasure, by turning round the said spindles with a common winch similar to that used for raising and lowering of a bucket in a well. The internal frame may be also raised and lowered by any other mechanism applicable to the purpose, and the said internal frame may be made in one or more compartments or divisions as occasion may require. E E E E, the ends and sides of the internal frame; F the bottom of the internal frame, with small holes bored therein to drain off the superfluous moisture; G, part of the said spindle, staple or box, rack wheel, dog or stop, and winch, drawn on a larger scale.

Fig. 2, A profile or section of the said frames, shewing the internal frame drawn up within the external one close to the underside of the glass-lights, with the winch, spindle, wheel, and chains.

Fig. 3, Another profile or section of the said frames, describing the internal within the external one resting upon the hot-bed, with the apparatus before-mentioned for raising or lowering the same.

i In witness whereof, &c.

Specification of the Patent granted to CHARLES DIBDIN, Cranford, in the County of Middlesex, Gentleman; for a Method of facilitating the Learning of Music.

1

Dated April 9, 1808.

With an Engraving.

To all to whom these presents shall come, &c. Now KNOW YE, that my method of facilitating the learning of music consists principally in substituting the

M 2

letters

letters of the alphabet for the characters hitherto used for designating the notes named by certain letters of the alphabet, or perhaps it would be better to say in restor→ ing the writing or expressing of music by characters to its original simplicity.

The notes at present used in music are the semi-breve, which is equal to two minims, the minim, which is equal to two crotchets, the crotchet, which is equal to two quavers, the quaver, which is equal to two semi-quavers, and the, semi-quaver, which is equal to two demi-semiquavers.

The substitutes intended for these, are the period, the colon, the semi-colon, the comma, the semi-comma, and the demi-semi-comma.

In the present notation, the notes are placed on lines and spaces, and by that means describe the scale, which consists of the first seven letters of the alphabet five times repeated; so that a character must be resorted to to explain a letter.

The substitutes are intended to be the letters themselves, they will completely do away the cliffs, and the following arrangement is what I prefer. The first seven letters are to be large Roman capitals, the second seven large Italic capitals, the third seven small Roman capitals, the fourth seven small, or lower case, Roman, and the fifth seven small Italic.

For the sharp and the flat will be used the acute and the grave accents, and there is no necessity at all for the natural; for, unless a letter be accented, it will be played natural of course.

What are called the bars in music are intended to be called divisions; and, instead of the single and the double bar, it is intended to use an m dash and a section §;

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for