The Wonder Island Boys: The Mysteries of the Caverns

re not forgetful of the usual weekly outing. They had several quite important things right at home which needed looking into, if they wanted to solve some of the things on th

he greatest impression on the minds of all was the finding of the Investigator's lifeboat. It seemed almo

some effort to explore the direction the boat came from," was

ng much more time to hunting or other forms of recrea

pare provisions, so that we shall be able to know where we can get them in case of need. On the other hand, weapons are necessary, which take time to construct. If, however, it is th

vored of adventure, and it was some time before the boys could reconcile themselves to th

everywhere. Magnificent showers fell at intervals, and the rainbows, more beautif

months of their life, with the wonderful insight which their needs h

d a crescent across the heavens, "why there are never any rainbows in the middle of the day.

, wavy line. D, the next pitch higher, might resemble orange, with the wavy line a little shorter, and so on, until we reach the highest note in the scale, where the wave lengths are very short. You have probably noticed that a drop of water in the sunshine glistens, and, if closely observed, may have seen that it was colored, particularly blue or green. As the rays of the sun strike the globe of water, they produce different wave lengths, and in that way make it appea

The Colo

Reflecti

when a ray strikes a mirror. If, on the other hand, the glass had no mercury on it to reflect the light, the ray would not go straight throug

he edge of the forest. George was anxious to recover it, with the new team, and with Harry started out early in

guns which had been completed was taken along, as well as the only pistol which the Professor had

?" cried Harry, as

ere do you suppos

istance, nor show of fright, when the boys approached. One of them, Jack, still had the stra

was said. Without wasting time, the team brought with them was yoked up and the broken wheel replace

ose were the names bestowed on the first

ng them that no care or attention would be required in that direction. Both boys were intensely delighted

ing his hat at the sight of Jack and Jill. When the latter came up he went ov

away; look at the end of this thong." It plainly showed the teet

uery, as he saw the queer-looking reeds on the table i

and I took the occasion to-day to

t sugar

true sug

fferent fro

h is cultivated in the Northern States, is the Chinese Sorgo, or, as we call it, sorghum. It is equal

it is a flower? I never saw a flow

bits the plant, and is eaten by the inhabitants in the plains east of the Mediterranean Sea. It is there called Mount

operly named this p

to the after part of their wrecked lifeboat; but when the second one was found, and calculations were made as to its use

ly set to work making a sail and rigging up a mast, so that the long-cherished desire to make these trips could be undertaken before th

iece of cardboard which had been hidden, apparently, at the end of the board. Eagerly picking it up, he saw writing

The Hidd

y! I have found something!" Without waiting to see whether George heard, he rushed into the Professor's den w

ted voice, and appear

is i

silently handed it to George. "Did you kn

at the writer must be Will Sayers, one of the companions. The Professor

as the Professor's first suggestion. "We m

beach where the boat was moo

xact location

ross seat, and as I did so t

gain and see how it f

a crack was left at each end of the s

rease indicates, it could have been concealed there and thus escaped our observation." Aft

you th

must have been in its place of concealment for some time. Furthermore, the paper itself

u think it may

say; but certainly

hink it was some one from the Investigator? Otherwi

lem we shall now

ked and found a refuge there. How much of a refuge it was to them they had no means of knowing. They were thank

ding our comrades, whatever the cost may be. If that is your view, we should proceed with that determination, but let us prepare for

em ready within anothe

or your further information, I will state that I have been busy during

epend on the iron slugs which had been turned out, and they wer

asked George, who was

see, looks like lead itself, and is often mistaken for i

y n

lled a sulphide form. Do you

it is in combinati

sulphur is found in all metals, but when found i

get rid of t

emperature, comparatively, about 600 degrees Fahrenheit, so that w

paration for the work, and at the Professor's suggestion the boys took the te

ullets was begun. The Professor, however, suggested that the boys should devote their time to the con

mma and had a very earnest

so that you will know just when your energies will be required for the next step. An eminent engineer, on one occasion, in answer to a question as to why he was always prepared for an emergency, laid down this

was not necessary to direct the order of events. Each saw to it t