Periodical Literature. 109 



causing leaf shedding as important causes of poor nourishment. 

 In conclusion, the want of nutritive substances in some lime soils 

 was cited. K. W. 



3S Versammlung des Vereins Thuringer Forstwirte. Forstwissenschaft- 

 liches Centralblatt. May, 1912. Pp. 267-279. 



L. Parde describes in detail the results of 



Natural the regeneration of Scotch pine in the 



Regeneration neighborhood of Paris, which in most cases 



of has proved a failure. Waiting for natural 



Scotch Pine. seeding after the ground has run wild has 



resulted in severe losses. But before clear 



cutting, followed by planting or sowing is adopted, the writer 



recommends the trial of clear cutting in strips with the thorough 



preparation of the soil, coupled with sowings where conditions 



are unfavorable. If the results are not successful within 5 years, 



immediate completion by artificial means are urged before the soil 



is overgrown with weeds. T. S. W. Jr. 



Traitement du pin sylvestre dans la region de Paris. Revue des Eaux et 

 Forets. October i and 15, 1912. Pp. 577-586; 609-619. 



Forstmeister Foetsch sums up in this article 



Under planting the conclusions he has reached after thirty 



and years' experience in southwest Germany. 



Nurse The composition of the stands under his 



Planting. direction vary with the soil. On the heavier 



clay soils the hardwoods predominate, 



while the lighter sandy soils have been planted up to pine, spruce 



and fir. On the best sites a specialty has been made of raising 



large oak standards with a rotation of 200 years. 



In the regeneration of oak the main danger to be guarded 

 against is injury from frost. The most effective method is the 

 planting of some quick growing nurse tree which will prevent too 

 rapid radiation of heat on frosty nights, and conserve by its shade 

 the soil moisture. In cases where oak regeneration is to be 

 secured under mature stands, the same end may be accomplished 

 by the gradual thinning out of the larger trees. 



Underplanting has been found to be very necessary if the soil 

 is to be kept in good condition in the oak stands after they have 

 reached an age of 40 to 45 years. Beech is the best species to 



