The Wonder Island Boys: The Mysteries of the Caverns

d be well to give a brief review of the situation. When they landed on the island the year before, with nothing

hood, surrounded by dangers, and day after day having mysteries thrust upon them which only increased their fears

othing, to hunt food, and in the endeavor to learn about the condition of the island, and g

n race from the beginning of the world, in the effort to con

t in the opposite direction and cultivate the low and sordid instincts. Occupation, work, the utilization of th

need them any more than those on Wonder Island. What they do need is a true stimulus for work; and when that evening they were gathered

tes who gathered all that hoard in the cav

s reply, "that the only thin

on, the principal thing they lived for was

the question in the two sentences. But there is something t

to kill to g

her for money or glory; when he consistently devotes his days to labor, and his nights to thoughts to find out how he may do something better, or quicker, or cheaper, it might all be denominated selfishness, and so it is, in a way. It

lions and millions and who never did any of the t

hey are any better t

ld in the cave would not purchase a single meal. More barley had to be ground and the stock of honey was almost exhausted. Their

be taken to the flats, where the Professor had found the sugar cane. All joined in the journey

he way George's inevitable question point was in evidence. "What d

ubstance. Sugar cane was first made known in eastern Europe by the conquest of Alexander the Great. Nearchus, one of his admirals, in sailing down the Indus, found the reed, and it was, previous to t

ipal plants or substances

as the common dahlias, and numerous vegetables,

r contains all that is necessar

me and with the addition of nitrogenous matter has great fatt

mean by nitro

, peas, and the like, all cont

n, and mother made a syrup out of sugar and pu

as an aid to healing, since it protects the wound from foreign substances and from poisonous

full load was thus procured. The boys enjoyed the pith, and George playfully gave some to Angel

. Cane

of each of the spindles was longer than the other, so pulleys could be attached, the object being to provide a means whereby they might be turned by suitable belts from the water wheel. In addition, the top

els were now provided for the juice, and when they were filled, the Professor suggested that

object of put

itate the

process of boiling down was proceeded with. As fast as one of the vessels was boiled down, more of the cane was crushed, the juice

g, and no one enjoyed it more than Angel. From the moment he had the first taste of the pulp of the cane, he was the most interested one of the party. But the fun came the next morning, when Geo

he appearance of granulating, the fire was withdrawn, and the whole mass stirred until it was co

the maritime enterprise. One of the most valuable adjuncts for sailing is a compass. No attempt had been made to produce the implement, an

rth is a huge magnet, and any body which is magnetized has a north and a south pole. Th

s that make the needle

n the form of rings around the wire. This may not be understood in the absence of a sketch. For that purpose I make a drawing (Fig. 17) which sh

17. A

tism the same a

ppears to travel around the conductor (A), extends out for some distance from its body, and produces what is called a magnetic

nce between the nort

f the current. You will remember when we made the battery, it was shown that the current, outside of the battery, moved from the positive to the negative pole. That was merely stating tha

he magnetic poles should be at the

north pole of the earth. Any magnetized body must have these two opposite poles. If it is a body, like a bar of iron, one end is called north and the other south. Look at this other sketch (Fig. 18) and you will see how the currents flow in the two magnets. In

Magnetic

agnet turn around so that it is always parallel with the large magnet, and make th

if you will notice, at the north poles move toward each other, and at the south poles move away from each other. They are, therefore, acting against each other, and the result will be that the magnets will move away from each other. If, now, one of the magnets is turned

g. 19a. The

is stated that likes re

es

permanent magnet, it was necessary to make a small magnet, and so suspend it tha

took a hand in the work, and while they were preparing the metal for the little ba

ity resides, or remains, as it does in the earth. A temporary magnet is one which ha

rrent made to

he same thing is done to the bar as the bar of the permanent magnet exhibits. As soon, however, as th

rs ready, Professor.

ty steel. The harder the better, so that it

r way to make the

Remember, therefore, that for a permanent magnet, use the

permanent magnet, must we

because on that we shall want to wind some

ound, so that the different layers of wire could not touch each other. When this was completed, a spool was constructed, which

ened steel rod, through which a small hole had been bored, midway between its ends, and laying it down on the table, the projecting end of the temporary magnet which projected from the spool was put into contact with the hard

king a Perm

und to have a charge of magnetism, and for the purpose of providing a means for holding t

l piece of metal is always put across the ends

es