ADVERTISEMENT. 



closing Anatomical Preparations, and other Objects. 9. Cry- 

 stal of Electrical Calamine. 10. Curaudau's Furnace foj- 

 evaporating by a regulated Economical Heat. 11. Mr^ 

 Woart's Method of fuppprting decayed Timbers in Build- 

 ings. 12. Mr. Fairman's Method of extreme Branch-Graft- 

 ing. 13. Git. Lomet's Addition to the Sextant for meafuring 

 Vertical and Oblique Angles at the fame Inftant, from an 

 Air Baloon, for Military Service. 14. An Apparatus for 

 drying Precipitates, and for Processes of Congelation, by 

 Mr. Accum. 15. Hydraulic Combination for rendering the 

 Atmospheric Pressure effective in Raising Water in Worm^ 

 Tubs, by Edward Howard, Esq. F. R. S. 16. Improve- 

 rnent in the Syphon, by the same. 17. A Rotatory Apparatus, 

 by which the Power of a Steam-Engine is equalized without 

 a Fly, and the Work may be stopped, or fet off in any Part 

 of the Stroke, by Mr. A. Woolf. 18. Improvement in 

 Mr. Ezekiel Walker's Reflecting Quadrant, by the Inventor, 

 19. A new Steam Valve, which indicates the Strength, and^ 

 without Attendance, regulates the Emission of Steam from 

 a Boiler, by Mr. A. Woolf. 20. Mr. George Smart's Ma- 

 chine for Sweeping Chimnies without Climbing Boys. 2 1 . An 

 improved Chemical Furnace. 22. Two Views of the Great 

 Fiery Meteor which appeared Nov. 13. 1803. 



Soho Square, December, Ig03. 



