ENGRAVINGS. 



Vol. I. !S illuftrated with Engravings of the following Subje<?V!, 

 by Mr. Lowry, executed ir fuch ?. mafterly Manner us, v.-« can 

 fay with confiderce, ha» never been equalkd in any other periodi-. 

 cal Pubh'cation, viz. Mr. Cat twright's Steam Engine — A ,Furn?.c?c 

 for converting Iron into Steel — ^Mr. iDes Vigne.'.'s new invented 

 Apparatus for niaking Artificial Mineral Waters — The Mcchanifm 

 «f the large R^fleding Teifcope conftrufted by Proftflbr Schrader 

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

 — Lavoiiicr's Appara::'.;* for producing Water by the Gombuitlon 

 of Hydrogen G«s in 0.xjgi.a Gas — Cavallo's Apparatus for con- 

 taining Gas of ary Kind, siid tranfmitting it to Bottles, Bladders, 

 fcc- — Dr. Hock's Tciegrap'i, invented above a Century ago— Fi- 

 gures on the Ai^li*n and Pcwer of the Wedge — Skclcfon of the 

 Orang Outing •£ Borneo — ilegnier's Dynamometer, or Inflrument 

 for meafuring the Screrifrth of Men, Animals^ &:c. — Mathen^atical 

 Figures rcfpediwg the iiquilibrium and Stability of River and Canal 

 Boats — and Five Plates illuRrating the Thcor/ of Cryflallization. 



Vol. II. is illuilrated vvitli Eiigra\vngs of the foUawing Subi 

 jefts: — Mr. Keith's new invented Thermometer, which marks the 

 grcateft and feaft Degree of Heat from, cne Time of Obfervation 

 to another, and rcgifters it» own Height 2I every l^ftant — Mr.. 

 Keith's new Barometer, \<-h!ch marks the Rife and Fall of the 

 Merciiry from two different Times of Obfervation- — Mr. Brown*» 

 improved German Kfy for extrading Teeth — M. Van Marum** 

 Gazometer and Apparatus for ptoducing Water by the Com- 

 builion of Hydrogen G;.? ir. Dxygen Gaa--;the Dfliiggetiii or Eq«u» 

 Hcniionus of the Farteni Defertsof Middle Afia-r— the Canis Grains 

 Hibertiicus, or Irifli Wolf D( g — the Apparatus emph)yed by //J»f 

 Society for PbllflppbUa! Expefltnenis avd Con'Ler/[itioi:s, for combin- 

 ftug Hydrogen and Oxygen to form Watei»— Apparatus employed 

 by Mr. W. Wood, F.L.S to illuftrate the Pertneability 9/ Qlafs tQ 

 x\t Elcftric Fluid — the Apparatus employed by Mr. Varley for 

 hardening and tempering Steel— the Pianet Saturn, with hia Ring 

 and two mnermoft Satellites, as feen by Dr. Schrbter at Lilicnihal 

 —Mr. Rnpp's Apparatus for faturating Water with oxygenated 

 niuriaiic Acid, for the Pqrpofcs of Bleaching, without the Addi- 

 tion of Alkali — Reprefcntation of a Pearly Excrefcence — Mr. Cuthr 

 bertfon's Apparatus for combin'ng Hydrogen and Ciygcn to form 

 Water— the App iratus employed by Count Rumford in his Expe- 

 riments on the Propagation of Heat in Fluids — A i'late illullrating 

 C. Hauy's new Method of exprefling Cryftallinc Forms by fhort 

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

 by the Hindoos for making Incificns in the Poppy to extract Opium, 



Vol. III. is illuf^ rated with an Engraving of Mr. Ivlingcri's new 

 Diving Mafchme, by which a Perfon may dcfccnd a confiderablc 

 Depth in Water, and move, wallc, and work as if on dry Land ; the 

 Apparatus employed by MefTrs. Pcpys and AUcti in Freezing Fifty- 

 fix Pounds of N'iercury by Artrficial Cold ; ard for Freezing Acids, 

 &c. The Appa)\itvjs propdfed to be added to Mr. Klingert's Diving 

 Moohine, to render it more cxtenfivcly ufeful — Captain Boltori's 

 M cij.ne for drawing Bolts in and out of Ship^— Cit. Guyton's 

 Eudiometer; the improved Machine for Cutting Chaff, invented 



