456 Proceedbigs oftlie Society for the 



4. Donation. — Presentation copy of the Literary Gazette and 

 Journal of Belles Lettres, Arts and Sciences, &c. No. 888. From 

 the Publishers. 



April 23. — 1. Description and Drawing of a Machine for Com- 

 pressing Air by means of the Rise and Fall of the Tide, communica- 

 ble to any distance. By Mr Thomas Aitken, Pittencrieff Street, 

 Dunfermline. 



2. Model and Description of a Machine for facilitating the Cutting 

 of Curved Wood. By Mr William Kemp, Galashiels. 



3. Description and Drawings of a Safety Frame for the Boilers 

 and Vats of Dyers ; and of a Safety Cover for the Boilers of Bleach- 

 ers and Brewers, &c. By Mr Thomas Johnston, 137 George Street, 

 Glasgow. 



4. Letter from Mr James King, Sydney, N. S. Wales, dated 19th 

 July 1833, respecting the merits of a discovery of the superior fitness 

 of Sand, near Sydney, for the JManufacture of Flint and Plate Glass. 

 With a printed copy of a letter from him to Lord Viscount Goderich, 

 late Secretary of State for the Colonies, dated 1st July 1833; and 

 relative Testimonials, printed and written. 



5. Eight Specimens of various Prepared Earths ; in particular of 

 one called Ethereal Blue, which possesses all the properties of the 

 Ashes of Ultramarine, has many advantages over it, and can be 

 manufactured and sold at about one-fifth of the expense. Prepared 

 by Mr Murdo Paterson, dyer, Inverness. 



The following candidates were admitted Ordinary Members, viz. 

 John Hamilton, Esq. W. S., 1 Scotland Street. 

 Alexander Campbell, Esq., Greorge Square, Edinburgh. 



May 21. — 1. Mr Ford of Bailey and Co. reported the result of 

 their Experiments in making Glass with the Sydney Sand ; and 

 Specimens were exhibited. 



2. Dr D. B. Reid reported the result of his Experiments in ana- 

 lyzing the Sydney Sand, and the Lynn Sand. 



3. Mr Watson Gordon reported upon Mr Murdo Paterson's Pre- 

 pared Earths, including his Ethereal Blue, he. ; and exhibited Spe- 

 cimens prepared with Oil, with their relative tints wlien mixed with 

 white. 



4. Donation. — Specimens of Lithographic Printing. By Mr Sa- 

 muel Leith, Lithographer, Banff, Assoc. Soc. of Arts. 



5. Donation. — Nos. 2 and 3 of the Architectural Magazine. From 

 the (Conductor, J. C. Loudon, Esq. lion. Member Soc. Arts. 



