FORESTRY y^r 



fruit-setting arcs of uniform length should be left or whether they should 

 be longer at the base or at the end of the section, has not vet been solved. 

 The Author, after reporting the different opinions of 'I^rentix. Saxxino 

 and vStradajoli, sets out the results of the trials carried out for the last 

 5 years at the Wine .School of Conegliano, in two vineyards situated in the 

 upper part of the farm of that school. It is obvious from the two following 

 tables, that for horizontal or sHghtly oblique radii it is advisable to leave 

 the arcs at the base longer. The production per unit shows a marked 

 advantage on the part of the arcs longer at the base, and this quantitative 

 difference more than makes up for the slight detriment to quality. 



765 - Program for theTriennal Period 1915-17 arranged by the Swedish State Institute forestry 



of Experimental Forestry (Av styrelsen for Statens vSkogsforsoksanstalt for trearspe- 



rioden i^jis-i-d; faststiillt arbetsprogram). — .l/f./.Wrtm/t-H jrdn Statins Skoosfdi\<oksiin- 

 stiili, Part i^, 1915, pp. 5S-60. vStockholm. 1916. 



Following a meeting of the members of the governing Council and 

 the professors of the Swedish High School of Forestry and of the Institute 

 of Experimental Forestry, together with three specially summoned experts, 

 the program of work to be followed at the Institute of Experimental Forestry 

 has been sanctioned, with the right for the Institute to carry out minor in- 

 vestigations not laid down (i). 



I. — The question of regeneratiox. 



a) Seed investigations. 



Investigations shall be begun for the discover}- of the most suitable 

 time for gathering cones and as regards the keeping of forest seeds (Forest 

 Section) . The biology of germination of the most important forest trees shall 

 be studied, with special attention to the conditions of germination offered 

 by the soil (Physical Section). The experimental plots for the investigation 

 of the percentage of soil germination of the Norrland pine-seed shall be 

 revised and the results prepared for publication (Forest Section). Existing 

 areas for testing seeds of various origins shall be rexased when so required 

 (Forest Section). 



b) Special measures for securing natural regeneration. 



In suitable places experiments by means of thinning in accordance with 

 Wagner's method shall be carried out (Forest vSection), and in connection 

 herewith the seed-producing capacity of forest margins of different compo- 

 sition shall be studied (Forest Section). The degree of regrowth in cleared 

 lands shall be investigated in connection with their lie as to the points of 

 the compass ^Forest Section). The effect of brushwood burning and com- 

 plete clearing of the soil shall be investigated with regard to the supply of 

 nitrogen in the soil (Physical Section) . 



c) Measures of forest cultivation. 



(i) As is prescribed in ii 15 of the new Royal Instnicliniis for the State Institute nt l.\|'i • 

 riraental P'orestry (Cf. Kun'^l. Maj.ts nddi'j^a instntktion for Sttitctis Sko-'s/orsoksanstult ; fii/i 

 Stackholms slott den 5 mars 1915). (Ed.) 



