S02 Report of the Committee of the Society of Arts. 



mittee reported " to possess all the advantages of the other plans, 

 and none of the complication, and that it could be used with ad- 

 vantage, only it is not a self-acting feeder, as it requires the at- 

 tention of the engineer — but it is exceedingly simple." This 

 Communication was not a competing one. 



2. To John Scott Russell, M.A., F.R.S.E-f V.P.S.A., for his 



Communication on the same subject; — read 11th April 1838; 

 (543.) —which was almost identical with the preceding, and of 

 which the Committee reported in equally favourable terms. 

 This Communication, also, was not a competing one. 



3. To William Galbraith, M.A., C.S.A., Teacher of Mathe- 

 matics, Edinburgh, for his Communication on a Formula to ob- 

 tain the Decrease of Temperature according to the Height above 

 the Earth's Surface ;— read 11th April 1838. (546.) 



4. To Mr Edward Sang, F.R.S.E., Civil Engineer, Edinburgh, 

 for his Essay on the Construction of Oblique Arches; with 

 Model and Drawings; — read and exhibited l6th May 1838, and 

 previous dates. (511.) Ordered to be printed in an abridged 

 form in the Transactions. 



5. To Mr George Richardson, Printer, 35 Miller Street, Glas- 

 gow, for a Communication sent by him in competition for the 

 Prize offered " For a Method of Removing the Plaster of Paris 

 from the Types after Stereotyping, without injuring the Types ;" 

 —read 28th February 1 838. (51 6.) 



The Thanks of the Society are given to Mr Richardson be- 

 cause he has to a certain extent succeeded ; — in so far as he 

 has found out a simple method of removing the Stucco ; — 

 but the condition of the Prize is, that this must be done 

 " without injuring the Types ;" now, it is found that the 

 Types, after having undergone his process, become, when 

 dry, so firmly cemented together, that they cannot be sepa- 

 rated except by force, which is not only attended with in- 

 jury to the Types, but with greater delay than the common 

 mode. A method of preventing the latter defect would 

 render his invention eminently useful. 



All which is humbly reported by 



DAVID MACLAGAN, Convener, 



Museum of the Society of Arts, 



63 Hanover Street, Edinburgh, 



\Qth December \Q'SQ, 



