1821 



New Patents and Mechanical Inventions. 



171 



Ctinstanline and Eiigeup; or, uu Evening 

 at Mount Vernon, a Political Dialogue ; by 

 Junius Secundus. 3s. 



Refusal to Sign au Address of Loyalty, 

 no proof of Disaffection, and the Queen's 

 exclusion from the Liturgy briefly discussed. 

 Is. 



A Political View of the Times ; or, a 

 Dispassionate Inquiry into theMeasures and 

 Conduct of the Ministry and Opposition. 

 8vo. sewed. 



Historj- of the Causes and Effects of the 

 Confederation of the Rhine ; by the Mar- 

 quess Luchepini. 8vo. 12s. 



Obsen-aiions on the Report of the Select 

 Committee of the House of Lords, relative 

 to the Timber Trade. 2s. 6d. 



A Salford Salamander Anatomized ; Nine 

 Letters in answer to tbeRev. Melville HoiTie's 

 late Pamphlet, the Moral and Pulitical 

 Crisis of England ; by A. Auti-Homeus. 

 •2s. 6d. 



A View of the Sovereign Power, and of 

 the Statute Law, on the Question of the 

 Omission of the Queen's Name in the Liturgy 

 of the Church of England. Is. 



Journal of the Visit of her Majesty the 

 Queen to Tunis, Greece, and Palestine : by 

 Louisa Demont. Svo, 3s. 



THEOLOGY. 



The Religions and Religious Ceremonies 

 of all Nations — Christians, Mahomedans, 

 Jews, Gentoos, and Pagans ; with 100 en- 

 granngs. 10s. 6d. in red, or 15s. on royal 

 paper, bds. 



A Course of Sermons for the Festivals and 

 Fasts of the Church of England; by J. H. 

 Pott. 8vo.I2s.bds. 



Christian Morality Indispensable. A 

 course of twenty successive Sunday Evening 



Lectures; by the Rev. Thos. Scott, B.D. 

 8vo. 7s. 6d. 



A Selection of Psalms and Hymns f>jr 

 public worship. 12mo. 3s. or extra bds. in 

 red. 3s. 6d. 



Vindicise HebraiCce ; or a Defence of the 



Hebrew Scriptures, as a vehicle of r.^vealeJ 



religion : by Hyman Hurwitz. 8vo. 9s. bds. 



Sermons by the Rev. Isaac Miner, 2 vols. 



8vo. 11. Is. 



Thoughts on the Essential Requisites for 

 Church Communion, Baptism, and the Lord'*. 

 Supper, as connected with Christian Mis- 

 sions ; by W. Moorhouse, jun. l2mo,4s. 61. 

 Tracts on Christ ; by Bishop Burgess, 

 8vo. 12s. 



Two Sermons, I. on the Duty and reason- 

 ableness of Loyalty : II. on the Duty and 

 Reasonableness of that me lium, in respect to 

 Christian Faith and Practice, which lies be- 

 tween the extremes of apathy and enthu- 

 siasm ; by the Rev. R. Pearson. 4s. 



Anti-Radicalism, grounded on the Sermon 

 of Bishop Andrews, modernized and ad- 

 dressed to the people ; by the Rev. C. Dau- 

 beny, Archdeacon of Sarum. Is. 6d. 



Nuptiae Saerfe ; or, an Inquiry into the 

 Scriptural Doctrine of Marriage and Di- 

 vorce, addressed to both Houses of Parlia- 

 ment. 8vo.5s. 6d. 



The Apocryphal New Testament. A 

 New Edition with Additions. 8vo. 6s. 



A Prospective of the Apocryphal New- 

 Testament, containing Tables, Lists, Speci- 

 mens, <fec. 8vo.6d. 



VOYAGES AND TRAVELS. 



No. 6. Vol. IV. of the Journal of New 

 Voyages and Travels, contains Kellsall's 

 Classical Tour from Rome to Arpino. 3s 6d. 

 sewed, 4s. bds. 



NEW PATENTS AND MECHANICAL INVENTIONS. 



Reported by Charles Blunt, Draughtsman of Machinery, and London Agent to Patentees 

 and the Authors oj Inventions who desire to secure them by Patent. 



2'ke CENTAUR, or ptdo-niotive machine 



of DR. CARTWRIGHT. 



THIS singular machiiie claims our 

 notice as well for its beautiful sim- 

 plicity and eftectiveness, as that it is the 

 first step to the introduction of a class 

 of machinery whicli must eventually 

 become of vast importance to the com- 

 munity. The inventor professes to 

 effect by his machine, with the easy ex- 

 ertion of two men. the draught of a 

 leaded carriage, which is beyond the 

 powers of an efficient horse, and under 

 circumstances of speed and security en- 

 tirely beyond the capability of the 

 latter. 



A loaded cart, a part of wliich is seen 

 in the figure, has a pair of strong siiafts 

 projecting from its front; near the for- 

 >»ard extremities of these an upright 



timber on each, supports a horizontal • 

 cross axis, on which are suspended by 

 short iron levers, which turn freely on' 

 it, bars of wood a and b ; two of these are 

 placed at either extremity of the axis, 

 so that two act on each side of the ma- 

 chine. The extremities of the shafts 

 are connected by a cross beam e, to 

 which are hinged the levers c and d, a 

 longitudinal channel in tliese admit 

 the bars/, to pass through them, a small 

 roller is attached to the bars at about 

 one third of tlteir length from the lower 

 end, and the levers c and d, apply im- 

 mediately upon tliem ; spiral springs 

 are set upon the axis of sufficient 

 strength (o lift the bars « aiul A to a 

 vertical position, and with them by 

 means of the rollers, the horizontal 

 levers, c and d. (Iiioiigli whicli they 



jl^ss 



