THE 
AMERICAN JOURNAL OF SCIENCE, 
[THIRD SERIES.]. 
HD WALCOTT: ned 
Art. XLIV.—WHistory of the Changes in the Mt. Loa Craters, 
on Hawavi; by JAMES D. Dana. With Plate XII. 
THE instructive papers of Messrs. Emerson, Van Slyke and 
Dodge (p. 87) are a good beginning for a future history of the Ha- 
waiian volcanoes. The earlier history, for sixty-five years back, 
has a source of material in three scientific reports: that of Cap- 
tain OC. EH. Dutton (1883),* the memoir of Mr. Wm. T. Brigham, 
who visited the region in 1864 and 1865,+ and the report of the 
writer,t after an examination in 1840, each of which may be 
assumed to give the facts as they were observed, whatever the 
value of the explanations offered. In connection with these 
should be mentioned the descriptions and illustrations in the 
Narrative of the Exploring Expedition by Captain Wilkes.§ 
There are also accounts from yarious other sources which, 
although in many cases overdrawn, contain information of 
* Tn the Fourth Annual Report of the Director of the U.S. Geol. Survey, 1882~ 
’83, 140 pp. roy. 8vo, with maps and plates of Kilauea, the Mt. Loa crater, ete. 
+ Notes on the volcanoes of the Hawaiian Islands, with a history of their vari- 
ous eruptions, by Wm. T. Brigham, A.M., Mem. Boston Soc. Nat. Hist., vol. i, 
Part ii. 126 pp. 4to, with four plates (including a new map of Kilauea) and several 
woodcuts. 1868. Mr. Brigham’s map is reproduced in Captain Dutton’s Report, 
but without explanation or remark. 
{ Report Geol. Wilkes Expl. Exped., 756 pp., 4to, with folio atlas, 1849. 
§ Narrative of the Expl. Exped., by Charles Wilkes, U.S. N., Commander of 
the Expedition, 1838-1842. 5 vols. roy. 8vo, with an atlas. 1845. The account 
of the volcanoes of Hawaii is in vol. iv. Captain Wilkes required his officers to 
keep journals, and used them as a source for part of the material for his Narra- 
tive. 
Am. Jour. Sct.—Tuirp Suries, VoL. XXXIII, No. 198.—JUNE, 1887. 
27 
