further down (N. and N.E.) on the flow of rough aa and ridges of broken slag. It gives one the audatory and touch sensation of walking on popcorn balls, but such balls mixed with ground glass and razor blades from the havoc wrought on ones shoes and skin. Even the smooth crust is brittle and one is continually breaking through. The lava seems to have been first invaded by a moss (No. 128), after the lichen stage of which traces remain only in bare spots and volcanic bombs. Onto the foothold prepared by the moss have spread several species of ferns, grasses and herbs and an occasional small tree (none over 4 or 5 feet high) as enumerated below:- Ferns - 133, 134, 135. Two Lycopods - small "rats foot" 132 and a larger and more erect species 131. An orchid-like herb with lavender flowers and 6 ribbed capsules in racemes on a long flower stalk (127), a plume glass (129), quite abundant. Lavender thistle (121). A jointed bull-rush like herb and one with fleshy ovate leaves (see specimens taken) were frequent, but not in fruit or flower. Among the stunted trees are: 126,130,136, and the "rose bud" tree with linear lanceolate leaves (spec. taken on Tutuila - No. turned in). The elevation of the highest point of the rim, on the W. side, is 2040', rising about 190 to 200 feet above base on W. side. The mouth of the crater is about 150 by 200 yards, with the walls sloping steeply in palis and steep talis slopes to the botton 150 or more feet below. The lowest place is toward the south side with a series of terraces toward the north, each about 25 to 50 feet high to the top of the rim, elevation 1940'. On one of these terraces is a large round hole discolored by sulphur. The edge of the rim overhangs in in places, with wide cracks suggestive of imminent caving in. Walked around to N. low side and worked down to a lower shelf 1900' elevation. The bottom is perhaps 80-100 feet below. The walls on the inside are clothed with moss, grass and ferns, except on the cinder slides and steep drops. [See P. 53 for further description]. On the N. side are two small craters, separated from the main pit by low thin walls. About 150 to 200 yards N.E. by E. is a