210 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
brakes of any size are formed by them. There are but two 
islands in the group on which this region is well developed, 
Albemarle and Chatham. On both of these the belt in question 
is used for grazing purposes by the inhabitants. The upper 
part of the highest crater on Charles Island is also covered by 
this region, but the area here is so small as to be negligible. 
The following table shows the elevations in feet at which the 
different regions end at the various places on the islands visited 
by our party. The islands not mentioned are either too low to 
possess more than the dry region, or their regions are so ill 
defined as to render the exact limits impossible of determina- 
tion. Elevations which are followed by an asterisk are esti- 
mated, the estimates often having been made from a few miles 
out to sea by comparing the elevation of the place in question 
with that of some other place the elevation of which was 
known. 
ZONAL ELEVATIONS 
Dry Transition Moist Grassy 
Locality Region Region Region Region 
Abingdon Island, north side...... 1500* 
south) Side sa... - 450 1000 1950 
Albemarle Island, Banks Bay..... 1500* 
Cowley Bay ....| 1000 3000* 
Iguana Cove... 0 0 
Wrillignaabllin 6 by peo 150 350 1500 3150 
Charles Island, Black Beach Road 450 1000 1780 
Chatham Island, Wreck Bay...... 650 800 2100 
Mun canmlslandmcacm ec cs es. cise 900 1300 
Indefatigable Island, Academy Bay. 350 500 1500* 
north side....} 1500* 2000* 
northwest side 450 700 
southeast side. 400 800* 
James Island, north side.......... 1500* 2000* 
SOUtauStde ste rok g 900 1600 2850 
JjamesmBay oes 1300 2000* 2850 
From this table it appears that there is often a great differ- 
ence in the elevations at which a region begins and ends on the 
same sides of different islands as well as on different sides of 
