ENGRAVINGS. 



Vol. V. is illuftrated with a Rcprcfentation of a Blaft-Furnace 

 for the Reduction of Iron from the Ore in the large way of Ma- 

 nufafture; from a Drawing by Mr. MusHST—the Apparatus em. 

 p'oyecl by the French Chemifts in their Experiments on the De* 

 Sanation of the Diamond ; and alfo that ufed in the Production 

 of Cart Steel from Iren by Means of the Diamond— a Quarto Hate 

 of a New Mercurial Gazometer, invented by Mr. W..H. 1 epys 

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

 Octavo Plate, containing Reprefentations of Mr. Bukns's new In- . 

 vention, whereby Apartments may be mo T e effectually heated than 

 by the Methods now in ufej and the Accidents which fo fre- 

 quently occur, of Women's and Children's Clothes being fet on 

 Fire by Sparks from the Grate, may be prevented— A Chart to 

 - illuftrate Mr. Nucent's new Magnetic Theory— Mr. South $ 

 Ventilator for preferring Corn on Ship-board— Mr. Davis's Port- 

 able Machine for loading and unloading Goods. 



Vol. VI. is illuftrated with a Reprefcntation of a remarkable 

 Electric Phenomenon obferved in a Thunder-Cloud — American 

 Elks— An improved 40 Gallon Still, which may be charged and 

 en-.ptied upwards of Seventy Times in .14 Hours— An Improved 

 Still, which, even on a large Scale, may be charged and run off 

 Four Hundred and Eighty Times » * y Twenty-four Hours— The 

 TJrceola Elaftica, or Caout-chouc Vine of Sumatra and Pullo- 



Sinang Mr. Rodman's newly invented Trepanning Inftrument — 

 It. Collier's Filtering Machines— The Mus Buriarius— A Plate* 

 illuftrating certain Phenomena obferved in the Air- Vault of the 

 Furnaces of the Devon Iron-Works — An Air and a Water-Vault 

 for equalifing the Difcharge of Air into a Blafl-Furnace. 



Vol. VII. is illuftrated with a Hate illuftrating an unufual hori- 

 zontal Refraction of the Air — Apparatus employed by Mr. 

 Howard for trying the Effects of fulminating Mercury — Plate to 

 explain the Theory of the Evening and Morning Dew — Vcfpertilio 

 Piicatus — Mercurial Air-holder and Breathing Machine — Improved 

 Drilling and Rectifying Apparatus for faving Fuel — Machine by 

 which the Strength of Horfes may be employed to knead Pafte for 

 Bread — Rcprcfentation of the Galvanic Pile and Galvanic Circle of 

 M. Volta — Meteorological Chart to illuftrate the Influence of the 

 Sun and Moon in producing a periodical Variation in the Baro- 

 meter — The grand antique Bacchanalian Vafe, late in the Poflefiio* 

 of Lord Cawdor, now at Woburn Abbey j and, Apparatus em- 

 ployed by Dr. Herfchel in his Experiments on the different Re- 

 frangibility of the Rays of Light and Heat. 



Number X?»IX. is illuftrated with a reprefcntation of the- Ap- 

 paratus employed by Dr. Herfchel in his Experiments on the Sepa* 

 ration of the Rays of Light and Heat,— A true RepreicnUtion of 

 the Ibis yf the* Antknts. 



