Periodical Literature. 623 



of resistance to seawinds, it is destined to supplant the native 

 spruce. It also is fit for peaty, moist soils. It produces larger 

 amounts than the native spruce ; a sample area showing the 

 enormous increment of 380 cubic feet timberwood in five years. 

 It thrives on sites to which the native spruce is not adapted, and 

 is altogether highly recommended. 



Of the five pines, banksiana, jeffreyi, ponderosa, laricio, rigida 

 (strobtis is considered fully established) the first is only fit to 

 cover the poorest soils and perhaps to serve as nurse crop and 

 filler. It bears seed from the 8th year on. It suffers from the 

 game, tortrix and "nun" very much. 



The two Rocky mountain species have not developed any points 

 of distinctive value for North Germany ; nor is laricio of special 

 value except where silvestris is not at home. 



Pimis rigida has behaved very badly, most of the trees died, 

 broken down by snow and killed by fungi. Only scientific inter- 

 est is attached to it. Its value as an admixture to silvestris on 

 poor sites on account of its more plentiful leaffall is, however, 

 recognized. 



Juniperus virginiana has not proved of value in North Ger- 

 many. 



Of larches, Larix leptolepis from Japan continues to be favor- 

 ably reported on. It grows more rapidly than the native larch 

 for the first 25 years, but its height growth culminates early (50 

 to 55 feet and 7 inch diameter at 23 years recorded). Its resist- 

 ance to the larch moth and to fungus disease is an additional 

 recommendation . 



Of Cypresses, three Chamaecyparis were tried, namely obtusa 

 and pisifera from Japan, and lawsoniana from United States. 

 The former two are found most subject to damage by mice, yet 

 on account of its superior wood quality obtusa is useful as an 

 admixture on better sites in mild climate. Lazvsoniana thrives 

 most excellently in most varied situations ; average fresh loamy 

 soil is best; on dry soil forking seems more frequent. It is an 

 intolerant species, but requires side protection, and is entirely 

 unfit to be used on large cleared areas, but is recommended for 

 filling out openings. Branches remain alive a long time, since it 

 has no spreading habit. Fungus diseases and damage by mice 

 are not infrequent, but on account of its excellent wood it should 

 be used more freely. "Pseiidotsuga douglasii has fulfilled in full 



