48 BULLETIN 1128, U. S. DEPARTMENT OF AGRICULTURE. 
(52) ScHRAMM, W. H. 
1906. Zum Vergrauen der Holzer. In Jahresber. Angew. Bot., Jahrg. 4, 
1906, p. 140-1538. Bibliographical footnotes. 
(538) 1907. Zu den Farbenangaben bei H6lzern. In Jahresber. Angew. Bot., 
Jahrg. 4, 1906, p. 154-168. Bibliographical footnotes. 
(54) 1907. Zur Holzvergilbung. Jn Jahresber. Angew. Bot., Jahrg. 4, 1906, 
p. 116-189. Bibliographical footnotes. 
(55) SCHRENK, HERMANN VON. 
1900. Some diseases of New England conifers. U.S. Dept. Agr., Div. 
Veg. Phys. and Path. Bul. 25, 56 p., 3 fig., 15 pl. Bibliographi- 
cal footnotes. 
(56) 1903. The “bluing” and the “red rot” of the western yellow pine, 
with special reference to the Black Hills Forest Reserve. 
U. S. Dept. Agr., Bur. Plant Ind. Bul. 36, 40 p., 14 pl. (partly 
col.). 
(57) 1903. The brown-rot disease of the redwood. In U. S. oe Agr., 
Bur. For. Bul. 38, p. 29-31, pl. 10-11. 
(58) 1908. A disease of the white ash caused by Polyporus fraxinophilus. 
U. S. Dept. Agr., Bur. Plant Ind. Bul. 32, 20 p., 1 fig., 5 pl. 
(59) 1907. Sap-rot and other diseases of the red gum. U..S. Dept. Agr., 
; Bur. Plant Ind. Bul. 114, 37 p., 8 pl. 
(60) SPARHAWK, W. N. 
1919. Supplies and production of aircraft woods. National Advisory 
Commit. for Aeronautics Rpt. No. 67, & p., 28 maps. (Pre- 
print from 5th Ann. Rpt.) 
(61) SPAULDING, PERLEY. 
1906. Studies on the lignin and cellulose of wood. Jn Mo. Bot. Gard. 
17th Ann. Rpt., p. 41-58, pl. 12 (ecol.). Bibliographical 
footnotes. 
(62) 1911. The timber rot caused by Lenzites sepiaria. U.S. Dept. Agr., 
Bur. Plant Ind. Bul. 214, 46 p., 8 fig., 4 pl. Bibliography, p. 
31-37. 
(63) TIEMANN, HARRY DONALD. 
1907. The strength of wood as influenced by moisture. U. S .Dept. 
Agr., Forest Serv. Cire. 108, 42 p., 6 fig. Bibliographical foot- 
notes. 
(64) 1912. Principles of drying lumber at atmospheric pressure and humid- 
ity diagram. U. S. Dept. Agr., Forest Serv. Bul. 104, 19 p., 
2 he. Cl fold.) 
(65) [1917]. The Kiln Drying of Lumber ... xi, 316 p., 54 fig. in text 
and on pl., 8 pl. (1 fold.). Philadelphia, London. 
(66) 1917. The theory of drying and its application to the new humidity- 
regulated and recirculating dry kiln. U. S. Dept. Agr. Bul. 
509, 28 p., 3 fig. 
(67) TuBEUF, C. VON. 
1897. Die Zellgiinge der Birke und anderer Laubholzer. Jn Forstl. 
Naturw. Ztschr., Jahrg. 6, p. 314-819, 8 fig. 
(68) U. S. Dept. Agr., Forest Products Laboratory. 
1918. Information for inspectors of airplane wood. Bur. Aircraft 
Production, Inspection Dept., 72 p., 52 fig., 2 pl. Washington, 
D. C. 
(69) 1919. Wood in aircraft construction. Reprinted from Aircraft De- 
sign Data, Bur. Construction and Repair, Navy Dept., 149 p., 
82 fig. Washington, D. C. 
(70) WAGNER, JOSEPH B. 
IS Seasoning of Wood . . xiii, 274 p., 101 fig. (1 fold.). New 
York. Bibliography, p. 251. 
