ENGRAVINGS. 



Vol. TIL is illuftrated with an Engraviag of Mr. Klingert'a ne^ 

 JDivtng Machine, by which a I'erfon may defccrid a condderable 

 Depth in Water, and move, walk, 3nd woik as if on dry Land } the 

 Apparatus employed by MtfTrs. Pcpys and Alien in Freezing Fifty- 

 fix Pounds of Mercury by Artificial Cold ; and for Freezing Acids, 

 Src. The Apparatus propofed to be added to Mr. Klingei t's Diving 

 Machine, to rei'der it more extenfively ufeful — Captain Bolton's 

 J^arhne for drawing Bolts in and oiit of ShipK^ — Cit. Guyton's 

 Eudiqmelcr ; the improved Machine for Cutting Chaff, invented 

 by Mr. Robert Salmon, of Woburn, Bedforddiire, for which a 

 Bounty was voted to him by the Society for the Encouragement 

 of Arts. &c. — The new Machine invented and employed by the 

 late Mr, Cuftance to make his linrivalled Vegetable Cuttings for 

 the Microfcope ; drawn and engraved from the Machine itfelf^ now 

 in the poflcflion of Dr. Thornton 5 a Plate to explain the Method 

 of forming Figures with Sand, on Vibrating Surfaces, according 

 to Dr. Chladni's Theoryr— The Furnace employed by the Frenca 

 Chemifta in their Examination of C. Clouet's Procefs for the im- 

 mediate Converfion of Iron into Caft Steel by means of Csrboaat 

 qf Lime ; and the New Steel- Yard invented by C. Paul of Geneva, 



Vol. fV. is illuftrated with a Plate of Figures to explain Volta's 

 Theory of Galvanifm — Apparatus employed by Dr. Van Marum 

 for the Combuftion of Phofphonis in Oxygen Gas — A 410 Plate 

 relative to the St< u<fture of the Ci^ftals of Oxyde of Tin — A Plate 

 iUuftrating the bed Conftriidion of the Vanes of Windmills, a's far 

 as concerns the Angle of Weather — Mr. Mufliet's Pyrometer for 

 afcertainiiicr the Heat of an AfTay-f^mace — >Von Hauih's New DIf- 

 charjring Elcftrometer, laid before the Royal Society of Copen- 

 hagen — Humboldt's Portable Barometer for Travellers — A Plate oJF 

 the comparative Height of tlie Mountains of Venus, the Earth, 

 and tlse Moon; according to the Obfervaticns of M. ScHkOETBR 

 of Lilienthal — C. Recni.-r's New Powder-pvoof for afccrtafning 

 fhe comparative Strength of Gunpowder — And a microfcopic re- 

 prefcntation of certain Animalculse found on the Surface of a Fifh- 

 pond in Norway, which gave it a Pi> d Appearance. 



V»l. V. is ill'.!('.n)ted with a Rtjire'cntation of a B.laft-Fuvnacc 

 for thf Rcdudliun of Iron from the O'e in the large way of Ma- 

 nuf-iifture ; from a Drawing; by Mr. Mushet— the Apparatus em- 

 jploved by the Frf nch Chemiils in their Experimejits on the Dc- 

 f gi ition pt the Dian ond ;, and alfo that ufed in the PioduAion 

 cf Ccft Ste'l from Ir«n by Means of the l>iamondr--j> Qu^ito Plate 

 of a New Mercutial G^.zometer, invented by Mr. W. H. Pepys 

 jiin. — Mr, Howard's Improved Air-Furnace — a Quarto and an 

 P£t:'vo Plate, tontaining Reprefentations of Mr. Buess's new In- 

 vention, whereby Apaftm.ents may be more cffeduaDy heated thaa 

 by the Me hods mw In life; and the Accidents which fo fre- 

 flyently Qcc^r,- of Women's and Children's Clothes being let on 

 Fire Ly h'parks from the Grate, may he prevented — A Chart tq 

 illulhaie Mr. Kvgent's new Magnetic Theoiy — Mr. Spurn's 

 YcnJiKitor L:v pref.rviiig Corn en Ship-bonrd — ^Mi^. Davis's Ppr't^ 

 »v,].: feiu-Mfr )/.,■ 1 n.^in.r iivi Lsnloading Goods, 



