The following Notes in the Appendix refer to the Second Volume,

Note AH, page 482. - To precede the last paragraph. (Silcock and Lowe's Patent Planes for Joiners, etc.)

Subsequently to the foregoing matter on planes having been printed, Messrs. Silcock and Lowe, of Birmingham, took out a patent in January, 1844, for various kinds of bench planes, constructed in great part of malleable cast-iron. Several of these planes are figured and described in the "Mechanics' Magazine" for 1844, pages 81 to 86, to which the reader is referred. A few lines are however extracted nearly verbatim for the convenience of those readers to whom this journal is not accessible.

"The first of these planes is certainly a very remarkable instrument. It is a double fillister plane, which is so constructed that it is capable of filleting boards of all sizes from about 3/8ths of an inch to about 3 inches, and may be adapted to the several purposes of a filleting plane, a side fillister, a sash or back fillister, and a shewed rabbet plane.'"

"When this tool is to be used as a filleting plane, both the right and left side planes are combined together, and fixed at a distance from each other, corresponding to the breadth of the fillet. To use it as a side fillister, the left side plane only is required, with a stop inserted into an appropriate recess. When it is to be used as a sash or back fillister the right side plane only is employed, but with a slight modification in the figure of the fence."

"To use the tool as a skewed rabbet plane, the right hand plane, with its chase and fence arc laid aside, and the left hand plane only is employed."

"All the parts are of cast-iron, protected by tinning or zincing from corrosion, with the exception of the stock and the handle and body of the fence, which arc of wood, and with the exception also of the screws, the cushion of the travelling screw, and the sliding nut, which are all of brass."

" The fore and back parts are cast in one piece. The wood of the handle is not cut across the grain, as usual, but with the fibres running in a direction at right angles to the body of the planes, whereby a considerable increase of strength is gained."

" The second instrument described, is a fluting or grooving plough. In this tool the body is wholly of metal, but in all other respects, as regards the materials and mode of putting them together, it possesses the same peculiarities as the double fillister plane first described."

"The third instrument is a dado-grooving plane, with which no less than sixteen and more different sixes of work may be executed; the fourth instrument is a trying plane suitable both for rough and smooth work; the fifth and last is a moulding or bead plane." The explanation of these peculiar tools cannot, however, be conveyed without exceeding our limit of space and the introduction of numerous figures.

In addition to the foregoing patent planes, constructed principally in metal, the patentees manufacture all the ordinary wooden bench planes with screws for fixing the irons, instead of the wedges driven by the hammer.

Note AI, page 487. - To follow the third paragraph. (Mr. Lund's Screw Router Plane.) Mr. Wm. Lund has constructed the router, fig. 341, page 487, with a screw adjustment to the cutter, as it is mostly necessary this should be set gradually deeper as the work progresses. When a similar but smaller tool is fitted with a perpendicular cutter, he finds it Tory useful in reducing the level backgrounds of small ivory carvings in bas-relief; in which case a margin is left around the subject, if only as a temporary guide for the router to run upon.

Note A J, page 488. - To follow the last paragraph. (Mr. Falconer's Improved Circular Plough.)

Mr. Falconers plough, rewarded by the Society of Arts in the Session 1846, presents many points of improvement on the banding plane by Mr. Onwin, described in the text The principles of the plough, fig. 335, page 486, ore nearly followed, but instead of a variety of fences being used some concave others convex, the new instrument has a flexible steel fence attached to the plough by two stays which are jointed to the ends of the elastic fence, whilst to the central part of the same is fitted a screw adjustment, so that the one- fence may be made to assume any required curvature, either convex or concave and of course the right line also.

The widths of the grooves are determined as usual by those of the cutters, which are provided with double pointed scorers or nickers, for cutting through such of the fibres of the work as lie transversely, and would otherwise be torn up. The entire construction of this circular plough is very judicious and complete, and the tool may bo considered as greatly improved on those previously used for this purpose.

Notes AK, AL, and AM. - To follow the last line of page 495. (Note AK, Mr. Franklin's Screw Bench Hook for Carpenters.) A screw bench hook for carpenters, intended to supersede that shown at a fig. 853, page 494, was invented by Mr. F. E. Franklin, of Purton, Wilts, and published in the Transactions of the Society of Arts for 1840, vol. 53, p. 92. There is a metal sheath or socket fitted to the bench, within which on iron bar with a side spring, slides up and down under the guidance of an adjusting screw below, the square bar carries two or more steel teeth formed as a separate piece and screwed on. The contrivance although quite effective is rather expensive for ordinary use.

Note AL. - To follow the above on page 495. (Mr. De Beaufort's Vice or Stop for a Joiner's Bench.) Figs. 978 and 979 represent the vice or stop for a joiner's bench, for which Mr. II. De Jay De Beaufort, of Perigeaux received the reward of the Society of Arts in 1841. There are two double-ended levers moving freely on the centers by which they are attached to the bed or foundation piece, so that when a board or piece of wood w, placed on edge, is inserted between them, it catches between the tails of the levers and separates them until the piece is grasped also by the other ends of the same levers, and therefore at two places at once, as seen in the plan fig. 979. The levers are about one inch thick, and the tail of the one is thinned to enter a cleft on the other, as distinctly shown in fig. 978, to adapt the vice to very thin pieces, and the levers being mounted on chamfered slides, may be fixed wider asunder for very thick pieces. See Transactions of the Society of Arts, vol. 53, page 86.