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Pa ee. 
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CONTENTS. 
Mr. Wituiams on the Combustion of Coal, and the Prevention of the 
Generation of Smoke in Furnaces ............++. sah aaeenetesdngenansee+cas6 
Mr. Farrsarrn’s Experimental Inquiry into the Strength of Iron with 
respect to its Application as a substitute for Wood in Ship-building 
Mr. Eaton Hopex1nson’s Experimental Researches into the Strength 
of Pillars of Cast Iron, and other Materials ....... asseduderessecsasceusess 
Mr. Loruian on a Revolving Balance ....... scanesweaoeauaeed Eottecneusesesese 
Mr. Tuom on a Water Filter .4.......ece0e. Saaeeemaseae ies te Saeena ssa easaeve 
Mr. Watcvace on a Smoke Protector ......sssessescessescecsecsees ed eelaans 
Mr. Marrutas Dunn on an Improved Working Barrel for use in 
PARMA MEALS OUCa's ssa dos cece den sdadesdspstesece ese oieopsassesanOesaiouerescuntcant 
Mr. Rayners on a Machine Regulator ........ssscesecseeceeceeseneeeceneees 
Mr. Suiru on the Drainage of Railway Embankments and Slopes ...... 
on Timber Bridges......... ARC Roghgpsnesdh sone. soenidartnccbosoate 
on Propelling Boats on Canals ..........2.00+0+ aed cauerereraree nee 
Mr. J. Hawkins on Mr. Bakewell’s Anglemeter ..........cseceseceeseneeee 
Mr. Smitu on a New Canal Lock ............20000 sudduiteaneranavececencge 
Mr. Farrparrn on Raising Water from Low Lands..............-sseeee00 
Mr. Tuom on an Improved Rain Gauge......... Biase Ceapware cas scese re doses 
Mr. James Jounston on a New Rain Gauge ..........2+00 spsibstehodeec: 
Rey. Dr. Paterson on an Improved Life-Boat .........scessesersesseeeeeeee 
Mr. Hawruorn on certain Improvements on Locomotive and other 
Engine Boilers .........s000..- Beesare eee ee Nap encase our osea anv acaens swace eae 
Mr. Grime on Wrought Iron Wheels for Locomotive Engines ......... 
Mr. Dircxs’s account of a Railway Wheel with Wood Tyre ......... eee 
Mr. Coxzs on a new Step-Rail, and Railway re Sure Scognag ee 
Mr. Lane on an Improvement on the Air Pump ...-..cssesecsseeeees densa 
Mr. Guuuine on Safety-Valves for Steam Boilers.............:esseeesseees 
Mr. James Mine on a Gas Regulator ......... peadenaa= Souseeeienee =p Senses 
Mr. JEFFREY ona new Hydraulic Apparatus ......ssceseeee BRP SE Reson ASE 
Mr. Ritcuiz on Warming and Ventilating Buildings .........00.+ssse000 
Mr, Grime on Dennett’s Rockets for preserving Lives from Shipwreck 
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