562 EXPERIMENT STATION RECORD. 



Recent importations among chrysanthemums, W. Miller {Hard. and Forest, 10 

 (1S97), No. 509, p. 4G5). 



The native dahlias of Mexico, J. W. Harshberger (Science, n. ser., 6 (1897), 

 No. 155, pp. 908-910). 



The new sweet peas for 1897, R. B. Whyte (Canad. Hort., 20 (1S97), No. 11, pp. 

 419-423). — Descriptive notes on 25 varieties of sweet peas. 



FORESTRY. 



Willows at the Chico Forestry Station, C. H. Shinn (Gard. and 

 Forest, 10 (1897), No. 512, p. 407). — The author gives brief notes upon the 

 condition of a number of species of willows planted at tbe Chico For- 

 estry Station. The collection was begun in 1805, plantings being made 

 of 21 selected varieties. In 1800 and again in 1897 others were added 

 to the collection until now there are about 40 distinct varieties being 

 grown. 



In February, 1806, from o to 10 plants of each kind were set out in a 

 permanent plantation. No irrigation or special care has been given the 

 trees. At the time of the report they were about 30 months old, and 

 the average growth of what seemed to be the most promising species is 

 given. Salix salmoni, an Old World species, showed remarkable 

 growth. In the nursery the cuttings made roots and sent up stems 10 

 ft. high within 6 months after planting. In February, 180G, 5 trees 

 were cut back to single stems 2 ft. high. In August, 1807, two of them 

 were 31 and 32 ft., respectively, in height, and their trunks exceeded 

 18 in. in circumference at 2 ft. from the ground. 



The average growth of some of the leading species is given below, 

 age, soil, culture, and other conditions being in all cases the same. 



Feet. Feet. 



Salix salmoni 30 Salix sieboldii 10 



alba vitellina IX madeni 8 



regalis L5 cordafa 6 



caprea 14 viminalis (female plant) 5 



daphnoides 13 > lucida 4 



viminalis (male plant) 12 purpurea 4 



pentandra 10 discolor 3 



" The best native willows under similar conditions appear to rank in 

 point of growth somewhere between Salix sieboldii and 8. regalis." 



The Araucaria forests of Chile and Argentina, F. W. Neger (Forstl. Natttriv. 

 Zt.schr., 6 (1897), No. It, pp. 416-426, figs. 5). 



Are the trees receding from the Nebraska plains? C. E. Bessey (Gard. and 

 Forest, 10 (ISO";), No. 508, pp. 456, 457). — The author states that some species are not 

 receding, and as to others the evidence is not conclusive as to their advancing or 

 retreating. 



Concerning the influence of weather on tree growth, J. Friedrich (Ceutbl. 

 Gesam. Forstw. Wien, 23 (1897), No. 11, pp. 4", 1-495, figs. 3). 



Influence of climate on tree growth, J. Friedrich ( Ueber den Einfluss der Wit- 

 terung auf den Baumzuwachs. Vienna: Wilhelm Frick, 1S97, p)>. /', 160, pis. ?5, figs, 40). 



Concerning the afforestation of waste lands (Landic. Cenlbl. Vosen, 25 (1897), 

 No. 30, pp. 184,185). 



