February lytli, ipoj.] PROCEEDINGS. xxi 



Mr. W. B. Baron, M.Sc, read a paper (communicated by 

 Mr. Stromeyer) on " The Influence of Hydrogen in Fuel 

 on the Composition of the resulting Flue Gases." He 



showed that by making the gas analysis, usually undertaken in 

 boiler trials, with little more than ordinary care, and applying 

 various corrections thereto, the relation of hydrogen to other 

 combustible in the fuel can be accurately found. 



The method was put to a practical test at a twelve hours' 

 boiler trial at the Salford Electricity Works on December 7th, 

 1902, and was found to give a result identical with that obtained 

 in the ordinary way. By applying the result to an ultimate 

 analysis of the coal, it was shown that it effects an important 

 reduction of the labour involved. 



Ordinary Meeting, February 17th, 1903. 

 Charles Bailey, M.Sc, F.L.S., President, in the Chair. 



The thanks of the members were voted to the donors of the 

 books upon the table. Amongst the recent additions to the 

 Society's library were the following :— " C/m'ted States Magnetic 

 Declination Tables and Isogenic Charts for 1^02" by L. A. Bauer 

 (4to, Washington, 1902), presented by the U.S. Coast and 

 Geodetic Survey; ''Time and Time- Tellers," by J. W. Benson 

 (8vo, London, 1902), presented by Messrs. J. W. Benson, Ltd.; 

 " The Records of the Woolwich District,'' by W. T. Vincent, 

 2 vols. (8vo., Woolwich, [1888-90]), presented by the author. 



Mr. N. KoLP read an extract from Vol. 12 of " Le Opere 

 di Galileo Galilei," consisting of Galileo's correspondence. In a 

 letter written to Galileo in 16 14, his friend Ottavio Pisani 

 claims to have drawn the first map of the world in hemispheres, 

 and also announces his invention of the opera glass, attributed to 



Galileo, in the following words: — " lo ho fatto una nova 



" sorte di mappamondi, mettendo in un cerchio tutto il globe in 

 "piano, cosa non fatta da nuUo ancora. lo ho fatto uno di 



