182 FORESTRY [Bot. Absts., Vol. V, 



1375. Mtjnns, E. N. Effect of fertilization on the seed of Jeffrey pine. Plant World 22: 

 138-144. 1919. — Various crosses between thrifty, mistletoe-infested, insect-infested, and 

 suppressed specimens of Pinus jeffreyi were made, with the result that thrifty trees produce 

 larger and heavier seeds, with a higher germination percentage, higher rate of germination, 

 higher real value per pound, and ability to produce stronger seedlings. Seeds borne on 

 suppressed, malformed, and diseased trees are of inferior quality for planting. The author 

 suggests forest management in which diseased and suppressed trees are removed, and only 

 thrifty seed trees left for seed purposes. In collecting seed for forest tree nurseries, thrifty 

 trees should be chosen as parents. [See also Bot. Absts. 5, Entry 1589.] — Chas. A. Shull. 



1376. Nellemann, L. P. NogleUnders0gelser Over Arbejdstidog Arbejdsydelse. [Some 

 investigations on working hours and working men's aid.] Dansk Skovforenings Tidsskr. 4: 

 408^27. 1919. 



1377. [Nordstedt, C. T. O.] [Swedish rev. of : Ostenfeld, C. H. Bemerkninger om dan- 

 ske Traeer og Buskes Systematik og Udbredelse I. Vore Aelme-Arter. (Remarks on the sys- 

 tematics and distribution of Danish trees and shrubs. I. Our species of Elms.) Dansk 

 Skovforenings Tidsskr. 1918: 421-442. 1918.] Bot. Notiser 1919: 102. 1919. 



1378. Oppermann, A. Et Lovbuds Udviklingshistorie. [History of the development of a 

 law.] Dansk Skovforenings Tidsskr. 4: 146-160. 1919. 



1379. Oppermann, A. Vort Skovbrug Omkring Aar 1900. [Our forestry in 1900.] Dansk 

 Skovforenings Tidsskr. 4: 259-316. 1919. 



1380. Pammel, L. H., and C. M. King. The germination of some trees and shrubs and 

 their juvenile forms. Proc. Iowa Acad. Sci. 25 : 292-340. Fig. 45-120. 1920.— One lot of seeds 

 was placed in good greenhouse soil in the fall (1917) and stratified in a cold frame, from which 

 they were removed to the greenhouse in March 1918. The second lot was planted in an open 

 place covered with two inches of soil and leaves. Air temperature records were kept through- 

 out the season; soil temperature records were kept in the fall until the ground was frozen, 

 and again during the opening of the growing season of 1918. Tables of temperature and pre- 

 cipitation are given. Photographs or outline drawings of the leaves, and frequently outlines 

 of trichomes, are given, with descriptive text, for the following species: Juglans cinerea, 

 J. nigra, Carya ovata, C. laciniosa, C. alba, C. glabra, C. cordiformis, Corylus americana, 

 Ostrya virginiana, Betula lutea, B. alba papyrifera, Quercus coccinea, Q. ellipsoidalis , Q. fal- 

 cata, Q. nigra, Q. imbricaria, Ulmus americana, U. fulva, U. purnila, Celtis occidentalis , Cra- 

 taegus mollis, C. Crus-galli, Prunus padus, P. serotina, Gleditsia iriacanthos, Gymnocladus 

 dioica, Ptelea trifoliata, Acer saccharinum, A. saccharum, A. saccharum nigrum, A. negundo, 

 Aesculus glabra arguta, Vitis vulpina, Tilia americana, Cornus alternifolia, Fraxinus penn- 

 sylvanica lanceolata, Catalpa speciosa. A table gives number of seeds planted and total num- 

 ber germinated. — H. S. Conard. 



1381. Pammel, L. H., and C. M. King. A variation in the black walnut. Proc. Iowa 

 Acad. Sci. 25: 241-248. PI. 3, fig. 48-44. 1920. 



13S2. Parnell, Ralph. Progress report on forest administration in the North-West 

 Province for the year 1918-19. 41 p., 1 map. Peshawar, British India, 1919. — Incorporated 

 with the annual report is a similar one covering the five-year period from 1914-15 to 1918-19. 

 Since 1917 a beginning has been made in the departmental exploitation of timber. So far wal- 

 nut, chil, and coniferous timber in one locality have been handled in this way. It is stated 

 that the loss of revenue incurred by the government by leases for even relatively short periods 

 in at all abnormal times, the difficulty of arranging for leases for long periods on a sliding 

 scale of royalties on account of the vested interests involved and the friction inevitable in 

 using the sliding scale, the importance of the Government's retaining its timber in its own 

 hands for as long as possible in case of emergent needs and the public advantage obtained by 



