Periodical Literature 349 



rings per inch, the percentage of summer wood, and the sharp- 

 ness of the color contrast between the summer and the spring 

 wood. There are other points of interest, all of which are 

 brought out in the coyprighted standards of the American Society 

 for Testing Materials, Philadelphia, reprinted in the Lumber 

 World Reznew, December 25. 1915. O. L. S. 



Circassian walnut, Juglans regia, to the 



Future extent of 1,745,000 feet is consumed an- 



Walnut nually in the United States. Most of it is 



Supply used as veneer for furniture, interior finish 



and musical instruments. The supply comes 



wholly from old orchards in the northeastern part of Asiatic 



Turkey, where they were planted originally for the nuts (English 



walnuts). After bearing a hundred years or more they are cut 



for the wood. In the United States there are 1,720,000 trees 



planted in orchards producing more than 20,000,000 pounds of 



English walnuts annually in California alone, where almost half 



the total number of trees are located. Texas and Oregon also 



have a large number of these trees. Thirty-'five States in all have 



bearing trees. Whether the wood from these trees will develop 



the fine figures and colors is not yet known; that grown in 



Europe has never come up to the native stock. 



The Black walnut, Juglaiis nigra, is planted for the nuts in 

 nearly every State ; Iowa leads in Black walnut orchards, Kansas, 

 Missouri, Nebraska and Pennsylvania follow in the order named. 

 At present the reports show 1,060,000 trees planted with three 

 fourths of them bearing, and the nut crop of 15,630,000 pounds 

 worth $245,000 annually. O. S. L. 



Hardwood Record, December 25, 1915. 



Tests made in Seattle, Washington, at 



Fire which quite careful records were made, 



Resistance show that a three-inch wall of wood is 



of more resistant to an exterior fire than an 



Wood inch thickness of wood covered with sheet 



iron. A small structure 4 by 6 by 8 feet 



was built with one wall of % inch shiplap lined on the inside 



with sheets of galvanized iron; the other three walls were of 



