Periodical Literature. 307 



Whoever wants to become acquainted with 

 German the remarkable development not only of the 



Wood wood industries but the means of trans- 



Indiistries portation of the wood trade in Germany, 



and should read the report of the journey of 



Trade. Austrian foresters as part of a commercial 



course instituted for the government for- 

 esters. This course lasts three months, of which two to three 

 weeks are devoted to a longer trip under competent guidance. 



The German waterways are developed to the highest efficiency 

 facilitating cheap transportation for bulky wood goods. Electric 

 machinery everywhere for rapid loading and unloading; specially 

 organized operators ; canals connecting all the rivers ; shipbuilding 

 establishments for river traffic of astonishing capacity ; large river 

 harbors and boom rooms (the small river Brahe, an affluent of the 

 Vistula carries $10,000,000 worth of goods annually, in which are 

 35 million cubic feet of wood) ; cooperation of municipal and 

 State governments; fixation of sand dunes; factories in which 

 machine work displaces almost entirely hand labor, etc., all the 

 complex commerce of the northeastern part of the Prussian 

 monarchy was the object of the study trip. 



Der Kommerzielle Kurs fiir Staatsforstbeamten, 1911. Centralblatt f. d. 

 g. Forstwesen. February, 191 2. Pp. 82-92. 



At the risk of repetition the following brief 



Paving summary of the paving-block is submitted. 



Blocks. The wooden block pavement is laid with 



the end grain up, otherwise exactly like 



brick upon concrete foundation costing $1 to $1.10 per square 



yard. The blocks are 3, 3^ and 4 inches thick, cut from 4 x 6, 4 



X 8 or 4 X 10 sound timber ; are treated at creosoting plants with 



either the 16-pound or 20-pound treatment. In hot weather 



blocks with 20-pound treatment are likely to "bleed." When they 



average 17I lbs. the following prices per sq. yard are quoted : 



16-Pound Treatment. 

 3 inch blocks, $1.51 per sq. yard 



3| inch blocks, $i-74 per sq. yard 



