No. 1, July, 1920] UNCLASSIFIED PUBLICATIONS 271 



1S07. BsTTHIBN, A. 1st die Ausdehnung der Ersatzmitteliiberwachung auf Wasch-, 

 Bleich-, Scheuer- und sonstlge Reinlgungsmittel sowie auf Ersatzmittel fur Wasche-Starke 

 erforderlich? [Regulation of substitute bleaching and scouring materials and washing starch.) 

 Zeitschr. Untersuch. Nahnmgs- u. Genussmittel 37: 344 370. L919. 



L808. Bmtton, V L. Report of the Secretary and Director-in-Chief [New York Bol 

 Gard.] for the year 1918. Hull. New York Bot. Gard. 10: 1-87. 1919. 



L809. Burkili,, I. II. Twin nutmeg seeds. Gardens' Bull. Straits Settlements 2: 168. 

 1919. 



1810. Burt, Adbna K. The balsam fir. Nat. Study Rev. 15:27-31. 1919. 



1811. Correa, M. Pio. Fibras Texteis e Cellulose. [Textile fibers and cellulose.] 270 

 p., 70 fig., 7 diagrams. Rio de Janeiro, 1919. — After a general introduction regarding the 

 fiber plants of Brazil, including those for which the conditions in Brazil are regarded as favor- 

 able, and especially plants which may yield fiber suitable for paper stock, detailed informa- 

 tion, including botanical and common names and synonyms, is given regarding the following 

 species: — piteira gigante, Furcraea gigantca; juta, Corchorus capsularis and C. olitoi 

 gravata de rede, Ajianas bracteatus; gravata de gancho, Bromeliakaratas; canhamo, Cannabis 

 saliva; guaxima roxa, Uena lobata; guaxima do mangue, Hibiscus tiliaceus; papoula do 

 Francisco, Hibiscus cannabinus, and notes relating to less important species. It is the 

 most comprehensive work that has been published thus far regarding the fiber-producing 

 plants of any portion of South America. — L. //. Dewey. 



1812. Fletcher, G. The industrial peat problem in Ireland. Jour. Amer. Peat Soc. 12: 

 205-20S. 1919. — In Ireland, since coal is expensive, producer gas can be made from peat more 

 cheaply than from coal. Nitrogen is recovered in the form of ammonium sulphate as a 

 by-product. — G. B. Rigg. 



1813. Fultz, F. M. Flower camouflage. Peculiarities of some wild flowers of southern 

 California. Sci. Amer. Supplem. 88: 8-9. 5 fig. 1919. 



1814. Gardner, H. A. Legitimization of soya bean oil. Sci. Amer. 121: 19G. 1919. — 

 Concerns the use of soya bean oil in paints and varnishes. — Chas. H. Otis. 



1815. Grandcourt, Genevieve. Eternal youth as a scientific theory. Sci. Amer. 121: 

 482, 490, 500. 1919. — A discussion of the place which Voronoff's thesis occupies in the 

 general field of human interest. — Chas. H. Otis. 



1816. Heritage, J. P. Is alcohol dead? Sci. Amer. Supplem. 88:242-243, 256. 1919.— 

 An article treating, among other considerations, of the various plant sources of alcohol and 

 the cost of manufacture from the different sources. — Chas. H. Otis. 



1817. Hindshaw, H. H. Logical methods of utilization of Minnesota peat. Jour. Amer. 

 Peat Soc. 13 : 37-44. 1920. — Modern methods of handling and treating increase the value of 

 peat for various forms of fuel. — G. B. Rigg. 



1818. Hitchens, Alfred B. Modern applications of photography. Jour. Franklin Inst. 

 187: 129-146. Fig. 1-13. 1919. — A peculiar r6sum6 of the subject including descriptions of 

 several biologic applications. — Ernest Shaw Reynolds. 



1819. Howe, H. E. Tobacco stems. Sci. Amer. 121: 162, 168. 1919. 



1S20. Juckenack, A. Kennzeichnung der fniher als alkoholfreier Punsch, Grog, Likor u. 

 dergl. in dem Verkehr gelangten Getranke. [Alcohol-free punch, etc.] Zeitschr. Untersuch. 

 Nahrungs- u. Genussmittel 37:220-23S. 1919. 



