THE M0K0R0NGA. 
891 
dark, it resembles a porcupine in miniature. If one touche* 
it, the haix s run into tho pores of the skin, and remain 
thcro, giving sharp pricks. There are others which have 
a similar means of defence; and when tho hand is drawn 
across them, as in passing a bush on which they happen to 
bo, tho contact resembles the stinging of nettles. From 
tho great number of caterpillars seen, wo have a consider- 
able variety of butterflies. One particular kind flies more 
liko a swallow than a butterfly. They are not remarkable 
for tho gaud i ness of their colors. 
In passing along, we crossed the hills Yunguo or Mvung- 
wo, which '•'O found to bo composed of various eruptive 
rocks. At one part wo have breccia of altered marl or slate 
in quartz, and various amygdaloids. It is curious to observe 
tho different forms which silica assumes. Wo havo it in clay- 
stone porphyry here, no larger than turnip-seed, dotted 
thickly over the matrix; or crystallized round the walls of 
cavities once filled with air or other elastic fluid; or it may 
appear in similar cavities as tufts of yellow asbestos, or as 
red, yollow, or green crystals, or in laminm so arranged as to 
appear liko fossil wood. Yunguo forms tho watershed be- 
tween thoso sand-rivulets which run to tho N.E., and others 
which flow southward, as tho Kapopo, Ue, and Due, which 
run into tho Luia. 
Wo found that many clophants had been feeding on tho 
fruit call‘*d mokoronga. This is a black-colored plum, 
having purplo juice. Wo all ate it in large quantities, as 
wo found it delicious. Tho only dofcct it has is tho great 
sizo of tho seed in comparison with tho pulp. This is the 
chief fault of all uncultivated wild fruits. Tho moko- 
ronga oxists throughout this part of tho country most 
abundantly, and tho natives eagorly devour it, as it is said 
to bo perfectly wholesome, or, as thoy express it, “It is 
pure fat,” and fat is by them considered tho best of food. 
Though only a littlo larger than a cherry, wo found that tho 
clophants had stood picking them off patiently by the hour. 
W e obsorvod the footprints of a black rhinoceros (Rhino 
