390 EXPERIMENT STATION RECORD. [Vol.35 



in charge contains summaries of all items entering into the construction of 

 the highway. 



What the highway engineer should know about bituminous materials, 

 P. Hubbard {Cornell Civ. Engin., 24 {1916), No. 6, pp. 260-278).— In outlining in 

 a general way what the highway engineer should know about bituminous 

 materials, the author deals with the classification of bituminous materials, re- 

 fining processes, petroleums, asphalts, tars, physical and chemical tests of 

 bituminous road and paving materials, and specifications. 



Road and concrete materials, H. S. Mattimore {Cornell Civ. Engin., 24 

 {1916), No. 6, pp. 280-293, figs. 3). — This article deals with methods of stone, 

 gravel, and slag testing; discusses the proportioning and inspection of con- 

 crete materials; and gives tables of tests of limestone, dolomite, sandstone, 

 quartzite, syenite, and trap from different parts of the State of New York. 

 The results of compression tests of sand mortars and diagrams showing the 

 effect of fine sand in concrete, the effect of tamping and moisture content on 

 void determination in sand, and the importance of screening sand are also 

 given. 



Revised practice on road building {Cement Era, 14 {1916), No. S, pp. 60- 

 61). — The principles adopted by the Second National Conference on Concrete 

 Road Building as representing good practice in the construction of concrete 

 roads and pavements are given. These include sections on materials, drain- 

 age, grading, subgrade, forms, pavement section, joints, mixing and placing 

 concrete, retempering, protection and curing, opening to traffic, one-course pave- 

 ment, and integral curb. 



Useful feet-miles conversion table for highway engineers {Engin. Rec., 73 

 {1916), No. 15, p. 482). — A table of figures computed for Connecticut state high- 

 way work is given. 



An unusual application of the rattler test for paving bricks, F. L. Roman 

 {Engin. and Contract., 45 {1916), No. 14, p. 329, figs. 2).— Rattler tests of partly 

 worn paving brick blocks, using angular ami spherical shots, showed abnor- 

 mally high losses not only in percentage but in actual weight. " It appeared, 

 therefore, that the blocks had a fairly hard exterior but a rather soft interior." 

 Drainage and preparation of subgrades, J. H. Huber {Cornell Civ. Engin., 

 24 {1916), No. 6, pp. 247-254). — The author reviews highway drainage in gen- 

 eral, taking up more especially underdi'ainage, foundation courses, culverts, 

 and preparation of subgrades. " In the design of the drainage system of any 

 highway, it is necessary that a survey be made by walking over it on foot 

 and all drainage conditions noted. The best time to do this is at the time 

 of the spring run-off and after the new grade line has been approximately 

 fixed." 



Reinforced-concrete construction. — III, Bridges and culverts, G. A. Hool 

 and F. C. Thiessen {New York and London: McGraw-Hill Book Co., 1916, 

 vol. 3, pp. XXII-\-688, pis. 7, figs. 569).— This is volume 3 of this series (E. S. R., 

 31, p. 186) and deals with bridges and culverts. It is divided into eight parts. 

 Part 1, on arch bridges, contains the following chapters: General data, de- 

 flection of curved beams, analysis of the symmetrical arch by the elastic theory, 

 design of an earth-filled arch bridge, use of influence lines in arch analysis, un- 

 symmetrical arches, arches with elastic piers, arch analysis by the method of 

 the ellipse of elasticity, details of arch bridges, construction of arch bridges, 

 three-hinged arches, and patents. Part 2, on slab and girder bridges, contains 

 chapters on slab bridges, simple girder bridges, continuous girder bridges, canti- 

 lever bridges, and reinforced concrete in steel bridge construction. Part 3, on cul- 

 verts, deals with factors in culvert design, pipe culverts, box culverts, and arch 

 culverts. Part 4, by A. W. Ransome, contains notes on the construction plant; 



