PUBLICATIONS OF GARDEN. 149 



489. Address before the Central Botanists. Science. . 



n. s. 23 : 97-100. 1906. 



490. Agave macroacantha and allied Euagaves. Rept, 



Mo. Bot. Card. 18 : 231-256. 'pl. I8-S4. 1907. 



491. Agave rigida — Furcraea rigida — Agave angustifolia. 



Rept. Mo. Bot. Gard. 19 : 273-287. pl. 29-35. 1908. 



492. Alaskan species of Sphagnum. Harriman Alaska 



Expedition. 5 : 331-337. 1904. 



493. The American Society of Naturalists. What aca- 

 demic degrees should be conferred for scientific work. 

 Science, n. s. 19 : 809-810. 1904. 



494. Annual report of the director. Rept. Mo. Bot. 



Gard. 15 : 13-37. 1904. 16:13-30. 1905. 17:28-40. 

 1906. 18:11-24. 1907. 19:11-23. 1908. 



495. Botanical Society of America. Science, n. s. 23 : 



221-222. 1906. 



496. Carl von Linn6. Horticulture. 5 : 681. Portrait, 



1907. 



497. The century plant and some other plants of the- 



dry country. Pop. Sci. Monthly. 70: 207-228. /. 1-22. 

 1907. 



498. Cooperation in biological research. Science, n. s. 



27 : 373-375. 1908. 



499. Cryptogamic botany of Alaska, introduction. Har- 

 riman Alaska Expedition. 5 : 1-9. 1904. 



500. An ecologically aberrant Begonia. Rept. Mo. Bot. 



Gard. 15 : 79-81. j)l. 28-29. 1904. 



501. The ferns and fern allies of Alaska. Harriman 



Alaska Expedition. 5 : 375-398. pl. U. 1904. 



502. Illustrations of a "strangling " fig tree. Rept. Mo. 



Bot. Gard. 16 : 161-165. pl. 39-45. 1905. 



503. A list of books and papers published from 



the Missouri Botanical Garden or by its employees, 

 or based chiefly on work done by aid of the facili- 

 ties of the Garden, from January, 1899, to Decem- 

 ber, 1903, inclusive. Rept. Mo. Bot. Gard. 15:87-97.. 

 1904. 



504. The Missouri Botanical Garden. School Sci. and! 



Math. 8 : 98-103. 2 pl. 1908. 



