FORESTRY. 543 



14). — Part 1 of this report explains the relation of the government to afforesta- 

 tion in New Zealand and shows the methods adopted in each island at the state 

 nurseries and plantations. Part 2 comprises a progress report by the officers 

 in charge of tree planting operations. The report is well illustrated and plans 

 of each island are attached showing the locality of the various state nurseries 

 and plantations. 



The afforebtation of sand dunes on the Hela Peninsula, Schttltz (Mitt. 

 Deut. Dendrol. Gesell., 1911, No. 20, pp. 82-92, figs. 4). — A descriptive account 

 dealing with sand binding and afforestation on the Hela Peninsula in West 

 Prussia. 



Forest planting in the northeastern and lake States (U. 8. Dept. Agr\, 

 Forest Serv. Clrc. 195, pp. 15, fig. 1). — This circular has been revised to super- 

 sede Forest Service Circular 100 (E. S. R., 19, p. 147). 



The planting suggestions contained herein are applicable to the New England 

 States, New York, northern New Jersey, all of Pennsylvania, western Mary- 

 land, the high plateau region of West Virginia, and the higher portions of the 

 Appalachians south of it, and to Michigan, Wisconsin, and eastern Minnesota. 



Forest nursery stock for distribution in the spring of 1911, A. F. Hawes 

 (Vermont Sta. Clrc. 6, pp. 8, j)ls. Jf). — This circular continues previous an- 

 nouncements (E. S. R., 24, p. 447) and contains brief cultural notes on trees 

 recommended for planting, infox*mation relative to prices and methods of pro- 

 curing state nursery stock, directions for planting, and estimates on the cost 

 of planting. Cultural suggestions are also given relative to the transplanting 

 of seedlings into private nurseries. 



The influence of age and condition of the tree upon seed production in 

 western yellow pine, G. A. Pearson (U. S. Dept. Agr., Forest Serv. Clrc. 196, 

 pp. 11). — The results are given of a study made in 1909 relative to the condi- 

 tions affecting the germinative quality of seed of the western yellow pine 

 (Pinus ponderosa) growing in Arizona at an elevation of about 7,200 ft. Seed 

 were collected from 100 trees representing different ages, sizes, and conditions 

 of soundness, and general health. The data secured are presented in tabular 

 form. 



Examination of the data as a whole indicates that seed from very young 

 trees has a higher germination than seed from old, mature, or overmature 

 trees. Certain injuries appear to increase the germinative power while others 

 decrease it. As compared with sound, healthy yellow pine, yellow pine affected 

 by heart rot showed a 3 per cent increased germination percentage; yellow 

 pine possessing spike tops showed a 15 per cent higher germination percentage, 

 as did also pine marked by fire scars. Mistletoe infected trees, on the other 

 hand, showed a germination 17 per cent below that of infected trees. The 

 effect of suppression on germination was not clearly demonstrated. The 

 highest quality of seed was produced in dense stands. The age and condition 

 of the tree appeared to have no material effect upon the rate of germination. 



An exact study of the factors influencing the yield of seed was not under- 

 taken, but the data secured show the older trees to yield the most cones. Spike 

 tops showed a yield only one-half as great as that given for healthy yellow pines, 

 and the yield of trees suffering from suppression, attacks of bark beetles, and 

 mistletoe were all much below that of normal trees of their class. The yield 

 deci-eased as the density of the stand increased. The influence of basal burns 

 upon yield was not fully demonstrated. 



The circular concludes with suggestions relative to the application of the re- 

 sults in regeneration operations. 



