242 Proceedings of 



the other ouil of tlic axle in a groove fix- 

 ed to the inside oftlie luonld plate; and 

 the axle by thus workiuf;- by grooves, 

 the vvliecl may be elevated or depressed 

 according to the proposed depth of the 

 furrow. I'he fore carriap;e consists of a 

 carriaj^e or gear plate of cast iron ; in 

 the front of which one wheel runs on a 

 wrought iron axletrce, and the other 

 wheel on anotlicr wrought-iron axletree 

 at the back part of the plate, both axle- 

 trees being attached to the plate by 

 screvt' bolts and uuts, so that one wheel 

 IS before the other; the front or furrow 

 side wheel going in the furrow, and the 

 Tear wheel going on the land. From the 

 ■axletree of eacii wheel goes a screw 

 )jolt, with an eye to hold the axletree 

 ■through the collars round the beam, by 

 which the fore carriage is fastened to 

 the beam ; and by means of a winch 

 working on the screw of these eye bolts, 

 "the wheels, cither or both of them, may 

 he elevated or depressed at pleasure, or 

 according to the depth of the furrow. 

 Trom the rear axletree a dol or draft 

 chain goes to tlie body, and fixes, by 

 nneans of a hook in a hole, in the bod}', 

 by which the draft is from the body 

 itself. A small scraper is fixed over 

 "the friction wheel, from the handle, 

 ■which keeps it clean. The plough han- 

 dles are as usual ; one of which fixes in 

 a groove in the cast iron body, and the 

 other is either bolted or morticed into 

 the beam. 



For a plate illustrative of this patent, 

 '•iir readers are referred to the Kepeu- 

 TORY,No. 172. 



tether Patents lately granted, of tchich tee 

 solicit the Specifications, 

 Benjamin Rotch, late of Castle hall, 

 Milford Haven, Pembroke, but now of 

 }ialh, Somerset, gentleman, being one of 

 ■the people called Quakers ; for a flexible 

 elastic horse-shoe, for the purpose of al- 



Public Societies. [Oct. 1, 



lowing the foot of the horse its natural mo 

 tion when shod. — May 11, 1816. 



Jean Samlel Paui.y, of Knights- 

 bridge, IMiddlesex ; for certain improve- 

 ments in the conscruction and use of fire- 

 arms. — May 14. 



Thomas Rlxton, of Dnblin, esq. ; fop 

 a lock for fastening doors, gates, drawers, 

 desks, trunks, boxes, portmanteaus, and 

 other things requiring fastenings, vvliiclj 

 he conceives will be of great public utility. 

 —May 14. 



Richard Francis Hawkins, of Wool- 

 wich, Kent, genileman; for a method, 

 plan, or principle, by which tunnel or tun- 

 nels, archway or aichways, may be con- 

 structed or etfected under the river 

 Thames, or other rivers, for the passages 

 of cattle, foot passengers, and other pur- 

 poses.— Mav 14. 



UAMEr, "Wilson, of U*her street, Dub- 

 lin, chemist ; for certain new and im- 

 proved apparatus to be employed iu the 

 distillation of animal, vegetable, and mi- 

 neral substances, and iu various other pro* 

 cesses. — IVIay 14. 



Wilmam Simmons, of Wigan, Lancas- 

 ter, writing-master and teacher of ac- 

 conuts; for certain improvements applic.i- 

 ble to keyed instruments, as the organ, 

 piano-forte, harpsichord, or to any instru- 

 ment or set of iustiunients to which keys 

 are, or may, or can be affixed.— May 14. 



Francis RiciiAKnsoN, of Queen- 

 street, Westminster, Middlesex, esq. ; for 

 improvements on the locks and barrels of 

 fire-arms ; and also an improveineiit or ad- 

 dition to bayouetx. — May '-ifi- 



I'HiLip Taylor, of Bromley, Middle- 

 sex, merchant ; for a method of applying 

 heat to liquors used in the processes of^ 

 brewing, distilling, and sugar refining. — 

 May 25. 



Ciiristoph Dihl, of New Bond street, 

 Middlesex, esq.; for an improvehient or 

 impiovements iu the making mastic ce- 

 ment or composition, and iu the mode of 

 working and applying the same to useful 

 purposes ; which cement or composition h« 

 denominates " Dihl's Mastic." — Mdy Sl5. 



PROCEEDINGS OF PUBLIC SOCIETIES. 



'MEDICAL ANn CHIRURGICAL SO- 

 CIETY of LONDON. 



BXPERJMENTS ((vd OLSERVATIONS VI 



ORDER to ascertain the means em- 

 jiloycd by the ammal economy in 



the FORMATION of BONE; % JOHN 

 IIOWSHIP, ESQ. 



irg"HiI i'> following iu(iuiry was principal- 

 Jl ly suggeslod by the very beautiful 

 results of the elaborate scries of cxpcri- 

 Tiients on the composition of Bone and 

 Cartilage, by Mr. Charles Hatchctt-; 



and the interesting nature of the subject 

 engaged me to pinsue it to the extent I 

 have done. 



Example I. An embrjo, eight weeks 

 old, was prepared by spreading out the 

 limbs upon slips of glass, and allowiuff 

 them to dry. 



Upon examining these by the com- 

 pound microscope, the following ap- 

 pearances presented themselves. Kings 

 of boner, had been formed in tiie sitnatioa 

 of the melacar]>al boues, aucl oilUe first 



and 



