Riv\ii;vvs 61 



cooperage, the only oak mentioned being the cow oak. Longleaf pine 

 is considered of chief importance for medicine ! 



The chapter on geographical distribution comprises lists of commoa 

 and botanical names of trees by continents. The African list is notable 

 for omitting practically all the timbers of commerce. The North 

 American list includes Pynts iiialtis. fdyus sylvalica, Aescnlus hippo- 

 castaneum, Prunus domcstica. !'. ccrsaiini, Pynis ociiparis, and /leer 

 pscndo-platanus but leaves out such native forest trees as black ash, 

 white oak, sycamore, tupelo, shdrikaf. loblolly and red pines, bigtrce, 

 and others too numerous to nieniion. His list of trees of South and 

 Central America and the West Indies is fragmentary and contanis 

 many errors. To cite only a few examples, Chloroxylon szi'ictcnia is an 

 East Tn.lian tree, the lignum-vitae of commerce is Guaiacum spp. and 

 not I.vora fcrrca, and the identity of cocobola is well established. 



In the chapter on the world's timber resources the compiler says : 

 "We have derived most of the information on the subject from the 

 reports of the Forestry Commission of Victoria, Australia." This 

 roundabout second-hand method is not to be recommended. Some of 

 the information is decidedly obsolete. To cite a single example: "The 

 existing government reserves (of the U. S. A.) lie in eleven States and 

 cover 10,719.000 acres.'" And this in a new book published in 1919! 



The remaining chapters appear to be somewhat better but a very 

 large part of the subject matter is in quotation marks. S. J. R. 



Ulcmcnts of Hydrology. By Adolph Meyer. John Wiley & Sons. 

 1910. 



Primarily a text book for the engineer and student, jNIeyer's "Ele- 

 mcnis {){ Hydrology" contains much of interest to foresters interested 

 in the streamflow phase of forest influences and is worth while from 

 a general reading standpoint. The book treats of the source of water, 

 its form and occurrence, and loss, the various forms of runoff and their 

 causes, the measurement of streamflow and its use, and the storage 

 of water. The chapters dealing with meteorology, evaporation, trans- 

 piration, and runoff are of most interest to a forester and the first sec- 

 tion is a treatise in itself on meteorology. 



In the introduction Meyer states : "Among the principal contra- 

 versial subjects of hydrology are those concerning the interrelationship 

 of forests, reservoirs, drainage, and streamflow. The lay mind asso- 

 ciates the removal of forests and the drainage of lands with destructive 



