THE PLANT WORLD 113 



duce the upward vertical stem. The actual disruption from the parent 

 root-shoot takes place when the new plant has become self-supporting 

 through its own root. This manner of bud formation from root-shoots 

 has been ably described and figured by Mr. Holm, for our common po- 

 gonia or snake-mouth {Pogonia ophioglossoides) . It probably will be in- 

 teresting for our readers to consult this paper by Mr. Holm in the Ameri- 

 can Journal of Science for January, 1900. 



EXPLANATION OF PLATE VI. 



Figure i . A mature plant of Ipomoea leptophylla Torrey. This plant was collec- 

 ted in Cherry County, Nebraska ; its root, the bush having been cut off at the soil line, 

 weighed forty pounds, a. The storage part. 



Figure 2. The root of a plant probably five or more years old. a. As in figure i. 

 b. The horizontal root-shoot, c. Branches of the root-shoot, apparently with aborted 

 terminal buds. 



Figure 3. The root of a plant about three years old. a. As in figure i. * 



Figure 4. A plant of one season, produced from the terminal bud of a root-shoot. 

 a. The beginning of the storage enlargement, d. The bud. 



Figure 5. Diagram of the cross-section of a root several years old and weighing 

 about twenty-five pounds. 



Figure 6. The terminal bud of the root-shoot, with the developing root and stem of 

 the new plant, d. The plane of rupture between bud and root-shoot. 



Figures 1-5 were drawn by Miss Mausie G. Cameron, of Washington, D. C. ; figure 

 6 by the writer. 



Extracts from the Note-Book of a Nat- 

 uralist on the Island of Guam.— XVI 1 1.* 



By William E. Safford. 



After our trip to the top of Mount Santa Rosa we visited the finca 

 of Doiia Joaquina de Kaminga, the daughter of my friend Don Jose Her- 

 rero and widow of a Dane who was murdered by a Filipino some time 

 before our arrival. The murderer had been tried and convicted, 

 but the approval of his sentence was never received from the Spanish 

 authorities at Manila ; so he is still in the calabozo beneath the tri- 

 bunal awaiting his fate. Doiia Joaquina has a large house on her estate, 

 roofed with corrugated iron. It is in good repair, but needs painting, 

 as unprotected wood soon deteriorates in a moist tropical climate. Her 

 land is of excellent quality, especially for cacao-culture, and it produces 

 fine coconuts and oranges. 



* Continued from the April issue. Begun in September, 1902. 



