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Maryland — State board of forestry. Thirty important forest trees of Maryland : 



how to know them. 3 t p. illus. Baltimore, 1922. 

 Meddelelser fra Det norske Skogforsoksva^sen, Hefte 3. Utgit av skogforsoks- 



viv;senet. Kristiania 1923. Innehåll: Skogforsoksviiesenets bygning og 



anlaeg s. 5 — 12, Skogforsoksvaesenets virksomhet 1921 — 1922, s. 13 — 



38, Om temperaturmaalinger og frossetning i Nord-Norges furuskoger 



1920, s. 39 — 87, Om kubering av staaende skog s. 88 — 133, samtliga 



av Erling Eide. 

 MiDDLETON, William: A sawfly injurious to young pines. (IJ. S. Departm. 



of agric. Farmers Bulletin 1259) Washington 1922, 11 sid. 10 fig. 

 Nklson, t. C: The European pileworm: a dangerous marine borer in 



Barnegat Bay, New Jersey. 15 p. illus. New Brunswick, 1922. (N. J.- 



Agricultural experiment station. Circular 139). 

 New Jersey lumber exchange. Lumber facts. 18 p. Newark, N. J., 1922. 

 New York state association. Committee on state park plan. A state park 



plan for New York, With a proposal for the new park bond issue. 83 



p. illus., maps. N. Y.. 1922. 

 Nigeria — Forests office. Annual report on the forest administration of Nigeria 



for the year 192 1. 18 p. Lagos, 1922. 

 Nort Carolina — Geological and economic survey. Common forest trees of North 



Carolina, how to know them: a pocket manual. 76 p. illus. Chapel 



Hill, N. C, 1922. 

 Oltmans, Friedrich: Das Pflanzenleben des Schwarzwaldes. 2 Auflage. Frie- 



burg im Breisgau. Herausgegeben vom Badischen Schwarzwaldverein 



1922. I. Text. 708 sid. 1x9 fig. II. Bilder und Karten. XII sid. 



200 tavlor och 17 kartor, 

 Ottawa river forest protective association, Itd. Ninth annual report, 1922, 



2 1 p. Ottawa, Can. 1923. 

 Oxford university forestry society. Journal, ist series, no. 3, 45 p. Oxford, 



1922. 

 Pk.avv, (t. W.: Oregon's commercial forests. 80 p. il. Salem, 1922. (Oregon — 



State board of forestry. Bulletin no. 2). 

 Pend d'Oreille timber protective association. Fifteenth annual report. 29 p. 



Sandpoint, Id., 1922. 

 Pennsylvania — Dept. of public instruction. Arbor days and bird days. 60 p. 



illus., Harrisburg, 1922. 

 I'ratt, J. H.: Forestry problem of the southern Appalachian and southeastern 



States. 14 p. Chapel Hill, 1922. (N. C. — Geological and economic 



survey-Forestry division. Circular no. 3). 

 <^)aeensland — Dept. of public lands — Forest service. Report of the director of 



forests for the six months ended 31st December, 192 1. 17 p. Bris- 



bane, 1922. 

 Rau, Madyar Gopal, and Simonsen, J. L. : Oils and fats from the seeds of 



Indian forest trees, pts. i — 5. 15 p. Calcutta, Supt. govt. printing, 1922. 



(Indian forest records, v. 9, pt. 3). 

 K AiNKi.ER, C: Forskellige Vegetationstypers forskellige Indflydelse paa Jord- 



bundens Surhedsgrad (Brintionkoncentration). (Det Kgl. Danske Viden- 



skabernes Selskab. Biologiske Meddelelser. III, 10). Kobenhavn 1922. 



74 sid, I fig. Pris 2: 40 kr. 



'I- SkogsvHrdsf öreningens Tidskrift igsj. Serien II. 



