FORESTRY. 643 



luiiilKM- ill T.M):". Ill refoiit years there iii)i)ears to be ii decrease in llie nninber of 

 hiiiilicr estaltlislnueiits. with a gain in the individual output. The largest 

 amount (if luiiihcr was fui-uished by yellow pine, followed by white pine. Doug- 

 las lir, heudoek. wliilf oak. sjiruce. etc. 



The amount of luiiibcr jiroduccd by all llie differcid sitecies of trees in the 

 various States is given in dct.-iil in tabular form, from which it appears that 

 Arkansas leads in the production of red gum and cottonwood. ("aliforida in 

 western yellow pine and redwood. Idaho in western while pine. Indiana in 

 hickory and walnut. Kentucky in yellow poplar. Louisiana in yellow pine and 

 cypress, Maine in spruce and balsam. Michigan in maple, beech, and ash. :Min- 

 nesota in white pine, Montami in larch, reinisylvania in hendock and chestnut, 

 Tennessee in red oak. West \'irginia in white oak. and Wisconsin in basswood, 

 birch, elm. and tamarack. 



The shingle cut in l!)or> by 2.r.47 ndlls was ir),;!4(l.;Hllt.i>(HI, and the total lath 

 cut in I'.Hir. by l.SOl nulls was :!.111,ir,T,()U0. 



Notes on the influence of forests on the storage and regulation of the 

 ■water supply, S. Eauuley-Wilmot ([Imliaii] Forest Bui. 'J, in>- oS, pU. 3). — A 

 summary is given of European research into the interrelation between forests 

 and rivers, with a discussion of the application of results of European research 

 (o Indian conditions. Heretofore the forests of India have been niauiiged with- 

 out s])ecial reference to water supply and stream flow. The great desirability of 

 consiclering this phase of the subject is pointed out at length. In the appendix 

 the priucip.d rivers of India are noted and extracts given from the proceedings 

 of the American Forest Congress in VM)~i. 



Forest litter and nitrogen, IIoknkerger {Ztschr. Forst u. Juijdic, 3H (IDO(j), 

 A^t». l,i, pp. 77-5-78/). — I''urther experiments are reported by the author (E. S. R., 

 IT, p. r)()4) to determine whether decaying leaves in forests are able to increase 

 their total nitrogen content by fixation of a certain amount of the free nitrogen 

 of the air. The materials used were oak and hornbeam leaves. Data obtained 

 in 8 different experiments are tabulated and the conclusion is drawn from the 

 work that it is now certain that forest litter under favorable ccmditions can 

 actually increase its nitrogen content by fixation from the free nitrogen of the 

 air. 



The effect of the moon's phases on the period of felling bamboos, E. P. 

 STEi!Hi.\(i tliidittii Forcxtcr. .ii (lilOd). \o. 11. pp. .j.i'/ -.j'/O). — It is commoul.y 

 held by the natives of India that the felling of export bamboos or of poles should 

 not be done when the moon is full, as otherwise, unless well soaked in a tank and 

 subse(iuently well preserved by smoke they will be i'ai*'dl.\' destroyed b.\' i>oring 

 insects, the most serious of which ai'e Dhiofleriis pilifroiis and /). iiiiniitiis. 



Four ex])eriments are r(>coril('<l in which bamboos were cut for a few days 

 before aiul after the new moon and full moon and at different seasons of the 

 year. In at least three of the exi)eriments the results seemed to show that the 

 season of cutting. wheth(>r before, during, or after full moon, had no effect on the 

 susceptibility of the bamboos to the attacks of beetles. 



Other results were secured which indicate that the cold weather months are 

 the best Ones in which to fell, the attacks of the borers being much less at this 

 season, and further that bamboos stacked in the shade and covered up in 

 such manner as still to allow the beetles getting at them were more severely 

 attacked than those stacked in the ojien. The author believes that if bamboos 

 are felled during Novembei' and the tirsf half of Decendier and inunediately piled 

 or stacked in the sun they will not be attacked by the boi'ers. 



Note on the chilgoza forests of Zhob and the Takht-I-Suliman, E. I*. 

 Steiuu.nc (\Iiiili(ni\ Forest Hul. T. /;/*. .(.7. plx. c, mtip I), 'fhe author, while 

 investigating the attacks uf bark-boring beetles which were devastating the 



