IV CONTENTS. 
M. Leguay. 27* On the advantages of improving the 
qualities of Cutting Instruments, by Burnishing, and 
thereby condensing their edges, by Thomas Gill, Esq. 
28. On the French mode of Treating Scythes, by 
hammering them cold. 29* On improving Bricklayers’ 
Trowels, by hammer-hardening them, by Mr Walby. 
SO. On improving Drills by hammer-hardening them 
cold. 31. On the improvement of Square Broaches or 
Boring-bits. 32. Blue and Green Colours derived from 
Althaea rosea* 33. Melaina. 34. New method of pre- 
paring Quills. 35. Panto- chronometer, - 370-377 
COMMERCE. 
36. Number of Vessels arrived at Alexandria in the years 1822, 
1823 and 1824, - 377 
STATISTICS. 
37. Population, - 378 
Art. XXVI. List of Patents sealed in England from 17th 
November 1825 to 23d January 1826, 378 
XXVII. List of Patents granted in Scotland from 17th 
November 1825 to l6th February 1826, 381 
List of Plates, - - 382 
Index, - 383 
