75*^ Forestry Quarterly. 



A short popular treatise on this subject has 



The recently appeared in French, compiled by 



Decay two military engineers. The pamphlet com- 



of prises forty-four pages and is divided into 



Timber two parts : I General ideas concerning the 



organization and development of fungi. 



II. Changes in wood due to fungi, and methods of preservation. 



After the usual introduction, a brief description of Merulius 

 lachrymans , Polyporus vaporarius, Stereiim hirsutum, St. frust- 

 ulosum, Polyporus sulfureus, P. igniarius, P. dryadeus, P. bore- 

 alis, Trametes pini, Tr. radiciperda (=Fomes annosus), Armil- 

 laria mellea, and blue-stain is given. This is followed by an out- 

 line of chemical tests with Nessler's reagent, Fehling's solution, 

 and silver nitrate, as well as microscopical examination, to detect 

 the diseased condition in wood. 



The section on prophylaxis and treatment includes a brief 

 discussion of the common wood preservatives. The paper con- 

 cludes with a note on the deterioration of wood by insects. A 

 large colored chart embracing thirty figures, for the most part 

 reproduced from Robert Hartig's works, accompanies the pam- 

 phlet and adds greatly to its value. 



C. J. H. 



Campa et Marinot-Lagarde. Notice stir les alterations des bois dues 

 aux champignons, et les moyens de s'en preserver. Extract from the 

 Revue du Genie militaire, Oct. & Nov., 1910. 



Brick reports a peculiar discoloration of 

 Wood pine window frames in a house at Ham- 



Discoloration burg, Germany, due to the fungus, Zythia 

 resinae (Fr) Karst. The trouble was char- 

 acterized by violet to dirty-red, or even dark grayish-brown, flecks 

 beneath the oiled surface of the wood. The spots were covered 

 with minute pustules varying from violet, orange, and brown 

 to black. These constitute the spore-producing bodies, of which 

 a careful description is given. 



The discolored areas extend within the wood more or less as 

 streaks closely associated with the medullary rays and resin 

 canals, which microscopic examination shows are abundantly 

 provided with brown septate mycelium. Only the central cells 

 of the rays are aflfected. In the tracheids little mycelium is 



