204 FORESTRY [Bot. Absts. 



into effect and with the Federal Government stimulating action and aiding the States. Cer- 

 tain principles which should form the foundation of such a system are detailed. — Chas. H. 

 Otis. 



1438. Hall, William L. Influence of the National forests in the southern Appalachians. 

 Jour. Forestry 17: 402-407. 1919. The establishments of national forests has aided in the 

 industrial and social transition of the southern Appalachian region, the influence showing 

 in the change in the local population, in improvements of industries, and in forest manage- 

 ment. — E. N. Munns. 



1439. Hawley, R. C. Measuring cordwood in short lengths. Jour. Forestry 17: 312-317. 

 1919. — Irregularities exist in the measurement of cordwood where long lengths are cut into 

 short lengths, due to practices in wood yards and with the character of the wood. In south- 

 ern Connecticut, the amount of actual wood in a cord is between 95 and 100 cubic feet for 12- 

 inch wood, and between 100 and 110 cubic feet for 20-inch wood. — E. N. Munns. 



1440. Hesselman, Henrik. Iakttagelser over skogstradspollens spridningsformaga. 

 [Dissemination of pollen from forest trees.] Meddel. Statens Skogsforsoksanst. 16: 27-60. 

 Fig. 1-8. 1919. 



1441. Hole, R. S. The regeneration of sal (Shorea robusta) forests. Indian Forester 

 45: 119-132. 1919. — A combination of the group and strip systems is indicated as the best 

 method of securing natural regeneration of sal (Shorea robusta), .by which the cutting cycle 

 will be reduced 35 years. Permanent strips three-fourths the height at maturity are laid out 

 north and south, alternate strips to be cut off in rotation, the second strip after the repro- 

 duction has attained its height growth. The cutting is done in small patches during inter- 

 vals of 5 years to permit regeneration to occur and keep weeds down. A modification later 

 may prove necessary in working progressively by strips instead of alternating. — E. N. Munns. 



1442. Howe, C. D. Some reflections upon Canadian forestry problems. Jour. Forestry 

 17: 290-296. 1919. — Much of the forestry practice in Europe is based on the rule of thumb 

 rather than on the understanding of definite biological principles, and in America we are fall- 

 ing into the habit of jumping to conclusions without sufficient evidence. Substantial data, 

 both intensive and extensive, are necessary to determine practices and to remedy unsatis- 

 factory conditions. — E. N. Munns. 



1443. Illick, J. S. Preliminary report of some forest experiments in Pennsylvania. 

 Jour. Forestry 17: 297-311. 1919. — Plantations have been made of a number of tree species 

 and of these the native pitch pine (P. rigida) has done the best and, from stem analyses, the 

 tree is an exceedingly rapid grower. Plantations of white pine on cut-over chestnut lands 

 in this region show that they will not make satisfactory stands unless sprout growth is re- 

 moved, and unless the competing cover is removed under 10 years it is suppressed beyond 

 recovery. Assistance cuttings given to young plantations are of decided benefit, though the 

 cuttings may be only a lopping off of the interfering branches. Three conversion experiments 

 are described somewhat in detail giving data showing the effect of the cover and the cut- 

 tings on plantations. — E. N . Munns. 



1444. Jardine, James T., and Mark Anderson. Range management on the national for- 

 ests. U. S. Dept. Agric. Bull. 790. 98 p., 32 pi. 1919.— Discussion of the interrelations of 

 grazing practice, range maintenance and game protection on the national forests. The rela- 

 tive adaptation of cattle, sheep, goats, and horses to various types of mountain and plain 

 ranges is outlined, such factors as character of forage, topography, distribution of watering 

 places, animal pests, etc., being influential. Recommendations are made for the maximum 

 productivity of forage and the maintenance of ranges. Separate chapters are devoted to 

 the management of cattle and sheep on ranges with especial reference to acreage quota, water- 

 ing places, type of forage and salting. Other chapters discuss the reseeding of ranges, pro- 



