ENGRAVINGS. 



Vol. I. Is illuftrated with Engravings of tl\e following Subjefls, 

 by Mr. Lowry, executed in fuch a mafterly Manner as,- we can 

 fay with confidence, has never been equalled in any other periodi- 

 cal Publication, viz. Mr. Cartwright's Steam Engine — A Furnace 

 for converting Iron into Steel — Mr. Des Vigncs's new invented 

 Apparatus for making Artificial Mineral Waters — The Mechanifm 

 of the large RefleC:'iing Telefcope conftrufted by ProfefTor Schrader 

 at Kiel — The Jumping Moufe of Canada, coloured after Nature 

 — Lavoificr's Apparatus fol- producing Water by the Combullion 

 of Hydrogen Gas in Oxygen Gas — Cavallo's Apparatus for con- 

 taining Gas of any Kind,.and tranfmitting it to Bottles, Bladders, 

 s^c — rDr. Hook's Telegraph, invented above a Century ago — Fi- 

 gures on the A6lion and Power of the Wedge — Skeleton of the 

 Orang Outang of Borneo — Regnier's Dynamometer, or Inftrument 

 for meafuring the Strength of Men, Animals, &c. — Mathematical 

 Figures refpeding the Equilibrium and Stability of River and Canal 

 Boats — anii FivejPlates illuftrating the Theory of Cryllallization. 



Vol. II. is' illuftrated with Engravings of the following Sub- 

 jects : — Mr. Keith's new invented Therir.omcter, which marks the 

 greateft and lead Degree of Hent from one Time of Obfervation 

 to another, and regiilers its own Height at every Inllant — Mr. 

 Keith's new Barometer, which marks the Rife and Fall of the 

 Mercui-y from two different Times of Obfervation — A'Ir. Brown's 

 improved Gentian Key for extracting Teeth — M. Van Marum's 

 Gazometer and Apparatus for producing Water by the Com- 

 buflion of Hydrogen Gas in Oxygen Gas — theD/hlggetiii orEquuj 

 Hemionus of the Eaftern Deferts of Middle Afia — the Canis Graius 

 Hibernicus, or Irifti Wolf Dog — the Apparatus employed by the 

 Society for PbMofopblcal Experiments and Con-verfations, for combin- 

 ing Hydrogen and Oxygen to form Water — Apparatus employed 

 by Mr. W. Y/ood, F.L.S. to illuftra^e the Pcrmcabflity of Glafs to 

 tV.e Eleftric Fluid— the Apparatus employed by Mr. Vmley for 

 hardening and tempering Steel — the Planet Saturn, with his Ring 

 and two iunermoft Satellites, as feen by Dr. Schrbter at Lilienthal 

 — Mr. Riipp?s Apparatus for faturating Water with oxygenated 

 inuriatic Acid, for the Purpofes of Bleaching, without the Addi- 

 tion of Alkali — Rcprefeatation of a Pearly Excrefcence — Mr, Cuth- 

 hertfon's Apparatus for combining Hydrogen and Oxygen to form 

 Water— the Apnaratus employed by Count Rumford in tn's Expe- 

 riments on the Propagation of tieat in Fluids — A Plate illuftrating 

 C. Hauy's new Method of exprelling Cryftalline P'orms by fhort 

 Signs — Mr. Jee's new-improved Mangle — The Inftrument employed 

 by the Hindoos for making Incifions in the Poppy to extract Opium. 



Vol. III. is illuftrated with an Engraving of Mr. Klingert's new 

 Diving Machine, by which a Perfon may defcend a confiderable 

 Depth irt Water, and move, walk, and work as if on dry Land ; the 

 Apparatus employed by Mefli-s. Pepys and Allen in Freezing Fifty- 

 fix Pounds of iVIercui-y by Artificial Cold ; and for Freezing Acids, 

 &;c. The Apparatus propofed to be added to Mr. Klingrrt's Diving 

 Machine, to reader it more extenfively ufcfuWCaptain Bolton's 



