786 EXPERIMENT STATION RECORD. [Vol.35 



dogs that occurs in Brazil and is commonly known as nambi-uvn, whicli ap- 

 pears in acute or icteric, subacute or hemorrhagic, and chronic or mild, forms. 

 The disease is caused by R. vitalii, a parasite belonging to the family Piro- 

 plasmidse. 



Tuberculosis of poultry, H. Welch {Montana Sta. Circ. 57 (1916), pp. 209- 

 219 figs. 7). — This circular discusses the subject of avian tuberculosis under 

 the general topics of birds affected, nature of the disease, detection of the 

 disease, post-mortem appearance, sources of infection, tuberculin testing, and 

 eradication of tuberculosis. 



RURAL ENGINEERING. 



Hydraulics, R. I^ Daugherty (New York and London: McOraw-Hill Book 

 Co., 1916, pp. XIV +267, figs. 245). — This is a brief treatise on the fundamental 

 principles of hydraulics. It contains the following chapters: Introduction, in- 

 tensity of pressure, hydrostatic pressure on areas, applications of hydrostatics, 

 hydrokinetics, application of hydrokinetics, flow through pipes, uniform flow in 

 open channels, hydrodynamics, description of the impulse wheel, description of 

 the reaction turbine, water power plants, theory of the impulse wheel, theory of 

 the reaction turbine, turbine laws and factors, and the centrifugal pump. 

 An appendix of tabular data is included. 



Hydraulics and its applications, A. H. Gibson (New York: D. Van Nostrand 

 Co., 1915, 2. ed., rev. and enl., pp. XVII+81S, figs. 359).— This book is intended 

 as a text-book for students and a reference bool^ for practicing engineers, and 

 deals with hydraulics and its application to the design of hydraulic machinery. 

 It is divided into sections on the physical properties of water, hydraulics, and 

 hydraulic machinery and contains 21 chapters on different phases of these sub- 

 jects. An appendix of hydraulic tables and data is included. 



Water power engineering, D. W. Mead (Netv York: McGratv-Hill Book Co., 

 1915, 2. ed., pp. XVII+8/f3, figs. 439).— This book covers the theory, investiga- 

 tion, and development of water powers. It contains the following chapters : 



Power, the load, the flow of streams, the measurement of stream flow, a study 

 of the power of a stream as affected by flow, pondage, storage, and head, water 

 wheels, turbine details, and appurtenances, hydraulics of the turbine, turbine 

 testing, turbine analysis and selection, speed regulation of turbine water wheels, 

 the water wheel governor, arrangement of the reaction wheel, selection of ma- 

 chinery and design of the plant, examples of water power plants, the relation of 

 the dam and power station, principles of construction of dams, appendages to 

 dams, cost of power plants and of power, financial and commercial considera- 

 tions, and the consideration of water power projects. 



Practical methods of measuring flowing water, C. O. Wislee (Engin. and 

 Contract., 45 (1916), No. 24, PP- 536-539).— "The object of this paper is to give 

 a brief resume of the different methods commonly employed in the measure- 

 ment of flowing water, drawing attention to those purposes for which each 

 method is best adapted and, flnally, discussing in more or less detail some of 

 the most important methods used in flow measurement." 



Tests of loss of head in strainers, orifices, and sand, L. Peaese (Jour. 

 Amer. Water Works Assoc, S (1916), No. 2, pp. 504-513, pi. 1, figs. 6).— The 

 results of tests of the loss of head in strainers used in rapid filters and in 

 small orifices are reported in tabular and graphic form. 



Earth pressure, retaining walls, and bins, W. Cain (New York: John Wiley 

 d Sons, 1916, pp. X+287, figs. 99).— This book contains the following chapters: 

 Laws of friction and cohesion— tables, direction, and distributon of stress; 

 thrusts of noncoherent earth — graphical methods; noncoherent earth— ana lyti- 



