Calendar: 1867-1868 Page 497

498 APPLIED SCIENCES Describe the preparation and chief properties of sulphu- retted hydrogen Where is it liable to be met with naturally How may it be best destroyed Mention the most important of the metals which are precipitated from their acid solutions by it What is superphosphate of lime How is it prepared By what means may phosphorus be extracted from it Mention the relative weight of the following gases if hydrogen be taken as -olefiant gas marsh gas cyanogen hydrochloric acid nitric oxide sulphuretted hydrogen giving the formula of each What is the result of firing mixture of cubic inch of olefiant gas with four cubic inches of oxygen at 60 State how olifiant gas may be obtained and give ita leading properties -9irtS of Construction SECOND YEAH -All drawings to be neat hand-sketches to scale Describe and compare pit sand and road sand Describe and compare Roman cement and Portland cement How is concrete to be best used in sea works and how to be made Describe the progress of decay in timber What is cinder iron and how employed Given beam of English oak 10 10 inches and 10 feet span lying level and loaded with 20 tons on the middle what would be the effect To prevent that effect by tilting the beam what angle wi uld suffice Sketch the peculiar arch used in China and give an opinion upon it Sketch the section of cast-iron girder to carry timbers 10 on the bottom flange and explain 10 Design the section for 40-feet road to be made with