240 EXPERIMENT STATION RECORD. [Vol.35 



about 0.125 to 0.25 in. deep directly iu flats containing a light porous soil, the 

 surface of the soil being covered with a light layer of sifted moss or similar 

 material. 



The planted flats are watered only sufficiently to prevent a complete drying 

 out of the layer around the seed. The warmer they are kept the more rapidly 

 the seed will germinate and grow. Some of the seedlings come up in four or 

 five weeks, others continue to come up for two, three, or more months. The 

 seedlings are transplanted into beds at the end of about five mouths, or when 

 they are about 4 or 5 in. high. 



The potted seedlings are kept in a greenhouse, lath house, or other protected 

 place until the following spring vphen they can be planted in the nursery. They 

 may be budded in the autumn or grafted the next spring. 



II. Grafting olive seedlings, F. T. Bioletti and F. C. H. Floss feder (pp. 

 322-326). — The results are given of experiments conducted to determine a good 

 method of tying, waxing, and covering nursery grafts. The method giving the 

 best results consisted in tying the grafts with a cotton string without waxing 

 and covering with soil to the top of the scion. When the grafts were covered 

 deeply waxing proved to be detrimental. 



Heredity studies with the carnation, C. H. Connors (Proc. Soc. Hort. Sci., 

 11 {1914), pp. 95-100, fig. 1). — A discussion of the results secured in the author's 

 breeding work at the New Jersey Experiment Stations. 



The work thus far conducted shows " that in crossing a yellow carnation 

 with white, red being present as a latent character, white is dominant over 

 yellow and red. In the second generation, yellow will be dominant over red 

 unless the red be strongly evidenced, in which case red is dominant over yellow. 

 In some yellow carnations the presence of red is associated with the presence 

 of perfect sexual organs. The probability of two kinds of white, homozygous 

 and heterozygous, as dominants is strongly suspected." 



The humidity factor in rose culture, M. A. Blake {Proc. Soc. Hort. Sci., 

 11 {WlJf), pp. 92-94). — The substance of this paper has been included in a 

 subsequent bulletin of the New Jersey Experiment Stations noted (E. S. R., 

 34, p. 44). 



FOKESTRY. 



Michigan manual of forestry. — II, Forest valuation, F. Roth {Ann Arbor, 

 Mich.: Author, 1916, vol. 2, pp. V+171, figs. 7). — The present treatise on forest 

 valuation comprises part 2 of the author's manual and text-book of forestry 

 (E. S. R., 32, p. 46). The introductory chapter discusses the literature, 

 scope, application, and history of valuation. The succeeding chapters treat 

 in detail of the arithmetic of forest valuation, application of valuation, rela- 

 tion of capital and Income in forestry, rotation, value of stumpage, damage 

 in timber, taxation of forests, fire insurance in forestry, and right use of 

 land. 



Structural timber in the TTnited States, H. S. Betts and W. B. GnEELET 

 {Internal. Engin. Cong., 1915, Sept. 20-25, Adv. Copy, pp. 50, pis. 2, figs. 16).— 

 A paper presented at the International Engineering Congi*ess, San Francisco, 

 in 1915, In which the author surveys the timber resources of the United 

 States with reference primarily to structural uses. Information regarding 

 the species of particular Interest to engineers is presented, together with a 

 summary of the data obtained by the Forest Service of the U. S. Department 

 of Agriculture on their mechanical properties and structural values. A brief 

 reference Is also made to grading rules and commercial specifications for 

 structural timbers. 



