1881.] A Geological Idea of Lord Bacon's. 581 
The middle segment should be 23 0 28' + (io°44' x 3) = 55 0 40' 
from Ps, leaving 34 0 20' to the equator, 6' more than the 
34 0 14, from Ps to Cape Horn. Cape PAgulhas reaches to 
34° 55'> 35’ farther than 34 0 20' ; the difference is that be- 
tween the io° 44' and iT 15', making up for the deficiency 
at Van Diemen’s Land. The west of Beagle Channel, north 
of Cape Horn, is from Ps as far as Cape PAgulhas is from 
the Equator ; the divide longitude 1 : 273 as land south to 
north in reality. The parallel of partition is moved to 53 0 S. 
lat., the mean latitude of Magellan Straits when the surface 
between it and Ps shall represent the 1-2978 of all land 
really moved north of the equator from the southern half of 
segment Pr. 
1-4*19 of all land moved south to north by the ocean 
accumulated over a more condensed interior have produced 
the relative land south to north 1 : 2*83. Quantities changed 
by tertiary causes to 1-4*25 and 1 : 2*73. 
The prototypic segments have been moved from Ps to 
31 0 20' of longitude at the equator in front. (The longitude 
occupied by ocean within the (31 0 20' x 3) = 94° of land 
formation in the equator is to the longitude of the adtual 
land as 1 : (^2*83) 3 , and represents a tertiary perturbation, 
connected with perihelion position.) 
The quantities moved are therefore indicated by the 
normal distances of the southern ends of segments from 
Ps, from which we afterwards have to dedudt the quan- 
tities retained or transferred south by reaction from the 
north. 
Segment Pr, initiating the transfer, had its polar end moved 
south towards and beyond Ps ; it became reversed in form. 
Graham’s Land points north as Greenland points south, and 
the first pointed end at Ps is now flattened between Ps 
and Ap. 
Segment Pr moved from 55 0 46' to where it still stretches, 
north of the equator, with a surface not only equal to a 
trune 31 0 20' wide and io° 44' high, equal to the triangle be- 
tween Ps and 55 0 46', the latitude of Cape Horn, but with a 
trune ii° 36' high, and equal to 1-29*78 of all land, or to the 
triangle reaching from Ps to 53 0 , the mean latitude of 
Magellan Straits, the channel indicating the parallel of 
partition, as the land from Cape Horn to the Chupat River 
23° 28' + (io° 44' x 2) from Ps indicates the return by northern 
readfion of land equal to the difference between a polar land 
section and the 1-29*78 of all land, the real return being 
only 1-480 of all land, and the antardtic sedtion being 
adtually 1-480 of all land smaller, and the middle section so 
