I-X)KESTHV. ' 48 



ilrivon ;in<l those vemainiiiiy; in slet>i)ei's for a varying nuniU'r oC ywirs. dieniical 

 tests to determine the nature of the s-ap present in the various timhers and its 

 I'ffeet upon metals, and investi.gations to determine th(^ resistance of these tim- 

 hers to dry rot, white ants, etc 



In the moisture tests each section was cut innnediately after the completion 

 of the i)hysic:il test and the moisture condition determined. The position of the 

 tree fmm whicli a specimen was cut was taken into consideration, and a com- 

 pl(||;e reciird of the sections used for all tests was kept with reference to the 

 tlirectioii of holding relative to the ammal rings and r.idial lines. 



The data oi)tained from the tests are sununarized upon numerous accom- 

 I»anyins schedules and diagrams. Examples are given illustrating the applica- 

 ti(m of the diagrams and formulas used in testing, and the methods of testing 

 and machinery used are described and illustrated. In addition to the detailed 

 descriptions a general sununary of the results has been brought together on a 

 large schedule, which shows the strength of the Western Australian hardwoods 

 as compared with recent available data concerning the most important of the 

 world's hardwoods. 



In all 10 species of eucalypts were tested, of which the more important are 

 Jarrah, karri, tuart, blackbutt, wandoo, York gum. red gum. and yate. Sev- 

 eral other kinds of wood wei'e also tested. The heaviest of the Western 

 Australian timbers, and of all the Australian timbers of note, were found to 

 be yate and wandoo, which averaged 7!) lbs. per cul)ic foot when first cut and 

 remained the heaviest when seasoned at 12 iier cent moisture. The strength of 

 the weakest of Western Australian eucalypts is said to be equal to that of 

 hickory and about 20 per cent greater than that of the best oak. Yate (Ettca- 

 I apt us conivta), common in the southeastern portion of the state, but stiH 

 Iiraetically unknown as a tinH>er. is believed to be the strongest " sawn " timlier 

 in the world, since in all of the present tests it was far ahead of the rest of 

 the Australian hardwoods. In one tensile test this timber withstood a breaking 

 load of ITi tons per square inch, or about .".A tons below that usually s])ecitied 

 for wrought iron of ordinary quality. 



Forest trees of New Jersey, B. D. Halsted (iVeir Jerseii Htas. Bui. 202, pp. 

 '>2. fins. 2o). — This bulletin contains a list of trees either native to or growing 

 wild in New .Jersey, and is intended to serve as a guide in the further tree 

 canvass of the State and ultimately to aid in tlie work of develoi>ing a genuine 

 and s.vstematic sylviculture therein. 



The list is l)ased upon N. L. Britton's " Flora of New Jersey," published b.v 

 the (Geological Surve.v in 1889. Information with regard to localities for the 

 sjiecies and further notes are" derived from various sources, enumerated hei-ein. 

 The botanical names of the species are given, together with some of the common 

 names and the area of distribtition. A list of various forestry papers is given 

 near the end of the bulletin, together witli a brief digest of the various legisla- 

 tive acts relating to forestry. The engravings are from Sargent's " Manual of 

 the Trees of North America." 



Studies of species of forest trees, II. IIesselman {8ko<f.<i ranis for. Tidskr.. 5 

 {l'.nn\. .Yo. l.pp. 1-1S. pi. J. fiffs. -'/). — This is the first of a series of articles on. 

 different species of forest trees. The present paper deals with the delayed 

 formation of chloroph.vll iu Picca excelsa, var. versicolor, notes on a mountain 

 spriice of unusual type, and a discussion of pine trees with large seed produc- 

 tion. — F. W. WOLL. 



Notes on balsam fir, B. Moore and R. L. Rogers {Forestry Quart., 5 {1907), 

 \o. /. pp. 'i1-.')0). — The authors made investigations near P"'renchtown, in the 

 north central part of Maine, on spruce and fir forests for the ptirpose of ascer- 

 taining the best sylvicultural practices for maintaining the proportions of 



