ioO PRIZE QCl-^STIOXS OF SCIENTIFIC SOCIETIES. 



PRIZE QUESTIONS OF SCIENTIFIC SOCIETIES. 



INSTITUTION or CIVIL ENGINEERS. LONDON. 



SUBJECTS FOR PREMIUMS, SESSION, 1863-'G4. 



The Council of the Institution of Civil Engineers invite communications on 

 the subjects comprised in the following list, as well as upon others; such as, 

 1st. Authentic details of the progress of any work in civil engineering, as fai 

 as absolutely executed (Smeaton's account of the Edystone light-house may be 

 taken as an example;) 2d. Descriptions of engines and machines of various 

 kinds; or 3d. Practical essays on subjects connected with engineering, as, for 

 instance, metallurgy. Eor approved original communications on these, or other 

 subjects, the council will be prepared to award the premiums arising out of 

 special funds devoted for the purpose. 



1. On the decay of materials in tropical climates, and the methods employed 

 for arresting and preventing it. 



2. On the theory of metal and timber arches. 



3. On the theory and details of construction of wrought-iron girder bridges. 



4. On laud-slips, with the best means of preventing, or arresting them, witb 

 examples. 



5. On the pressure of earth on tunnels, and the conditions which limit its 

 amount. 



6. On the theory and practice of artesian well-boring, and of sinking large 

 shafts, as now practiced on the continent. 



7. On the results of contrivances for facilitating the driving of tunnels, or 

 drifts in rocks. 



8. On the principles to be observed in laying out lines of railway through 

 mountainous countries, with examples of their application in the Aljis, the 

 Pyrenees, the Indian ghauts, the llocky mountains of America, and similar 

 cases. 



9. On the best means of preserving railways in Alpine countries from inter- 

 ruptions from snow. 



10. On the results of recent experience in iron permanent way. 



11. On the principles to be observed in the designing and arrangement of 

 terminal and other railway stations, repairing shops, engine-sheds, &c., Avith 

 reference to the traffic and the rolling stock. 



12. On railway ferries, or the transmission of ilway trains entire across 

 rivers, estuaries, &c. 



13. On locomotive engines for ascending steep inclines, especially when in 

 combination with sharp curves, on railways. 



14. On the working of locomotive engines in long tunnels, with frequent 

 stations. 



15. On the results of the application of Giffard's injector to the boilers of 

 locomotive and other engines. 



IG. On the working expenses of railways, and the influence on these of the 

 original design and construction. 



17. On the results of a series of observations on the flow of water from the 

 ground, in any large district, with accurately-recorded rain-gauge registries, in 

 the same locality, for a period of not less than twelve months. 



