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The Scientific American Boy Part 4

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[Ill.u.s.tration: Fig. 54. The Megaphone.]

[Ill.u.s.tration: Fig. 55. Layout of the Megaphone.]

[Ill.u.s.tration: Fig. 56. Bra.s.s Fastener.]

[Ill.u.s.tration: Fig. 57. The Mouthpiece.]

Another device we made in preparation for the expedition was a megaphone. A sheet of light cardboard 30 inches square was procured. At the center of one edge a pin was stuck into the cardboard, then a piece of stout thread was looped over the pin and the two ends were knotted together just 5 inches from the pin. Another knot was also made 29 inches from the pin. Now, with a pencil hooked into the loop, and resting first against the inner knot and then against the outer one, two arcs were drawn on the paper, one of 5-inch radius and the other of 29-inch radius. A line was now drawn from the pin to the point where the longer arc met the right hand edge of the paper, and a dotted line was drawn from the pin to a point 1-1/2 inches from the edge at the other end of the arc. From a point 1 inch to the left of the pin we then drew a line to the left end of the arc. With a scissors we cut the cardboard along the arcs and straight lines, all but the dotted line, leaving a piece of the shape shown in Fig. 55. This piece was rolled into a cone with the right edge lapped over the left edge and lying against the dotted line. In this position it was held by means of several bra.s.s fasteners of the kind shown in Fig. 56.

A mouthpiece was formed out of a block of wood in which a large hole had been drilled. The block was then cut away until the walls were quite thin. The hole was reamed out at the top, as shown in Fig. 57, and the outer surface was tapered so that the small end of the megaphone would fit snugly on it.

We planned to reach our camping grounds by way of the ca.n.a.l, and had provided for that purpose a large scow, which we expected to tow up to Lumberville and drag over to the river.

THE SCOW.

[Ill.u.s.tration: Fig. 58. Side pieces of the Scow.]

[Ill.u.s.tration: Fig. 59. Frame of the Scow.]

[Ill.u.s.tration: Fig. 60. Nailing on the Bottom.]

[Ill.u.s.tration: Fig. 61. Sockets for Rowlocks.]

[Ill.u.s.tration: Fig. 62. Thole Pin.]

[Ill.u.s.tration: Fig. 63. Nailing on the Decks.]

[Ill.u.s.tration: Fig. 64. The Oar.]

Our scow was made as follows: Two 3/4-inch pine boards, 12 inches wide and 12 feet long, were selected from Reddy's father's lumber pile. These were used for the side pieces of the boat, and we tapered them off at the end to a width of 3-1/2 inches. This was done by making a straight cut from the end to a point three feet back along the edge of the board and then rounding off the edge with a draw-knife. When one board had been shaped, it was used as a pattern for the other, which was thus cut to exactly the same size. For the end pieces two strips, 4 inches wide and 2 feet 10-1/2 inches long, were sawed out of a 1-inch board. Then for the bottom we procured a number of 3/4-inch boards, 12 feet long and 8 inches wide, which we cut into 3-foot lengths. At Bill's suggestion, before nailing the parts together, we secured some strips of flannel, which were saturated with paint, and laid between the seams so as to make the boat perfectly water-tight. The side and end boards were then nailed together, with the strips of flannel between, the side boards overlapping the end boards, as shown in Fig. 59. After planing down the end boards until their edges laid flush with the edges of the side pieces, the bottom boards were nailed on, strips of cloth being inserted between them, as well as along the edges of the side and end boards. To brace the bottom a 3/4-inch board was placed at the center, inside the boat, and bent down against the floor, to which it was nailed with wire nails. The nails were driven into the board from the outer side of the boat and were clinched inside. Along the upper edges of the side boards two strips 2 inches wide and 1 inch thick were nailed. Two notches were cut in the inner side of each strip before it was nailed on. The notches were 1/2 inch deep, 1-1/2 inches wide, 3 inches apart and about 5-1/2 feet from the stern end. When the strips were nailed in place these notches formed sockets to receive the rowlocks. A strip was also nailed across the stern of the boat and formed with two central notches, to receive the rowlocks for a steering oar. This strip, however, was 3 inches wide, and projected 1 inch above the end board, so as to lie flush with the deck boards, which were later applied. Six thole pins, 1/2 inch thick, 4-1/2 inches long and 2 inches wide, were cut out of an oak board. The lower end of each pin was reduced to a width of 1-1/2 inches for a length of 2 inches. The thole pins were then fitted snugly in the notches. Two cleats, nailed to the side boards inside, 7 inches below the upper edge, served to support a seat board 1 inch thick and 2 feet 10-1/2 inches long. The aft edge of the seat was about 10 inches forward of the rowlocks. The boat was completed by nailing on a couple of deck boards at each end. The oars were made of 2-inch pine boards, 5 feet long and 5 inches wide. They were blocked out at Mr. Schreiner's sawmill and then shaped and smoothed down with a draw-knife and spoke-shaved. They were 1-1/4 inches at the handle and 2 inches immediately below, tapering down to a diameter of 1-1/4 inches at the top of the blade. The blades were 18 inches long, 5 inches wide, and planed down to a thickness of 1/4 inch along the edges.

CHAPTER VI.

OFF TO THE ISLAND.

The morning of July 2d dawned bright and clear, but long before daybreak the members of the S. S. I. E. E. of W. C. I. were astir. The jolly red sun peeping over the eastern hills witnessed an unaccustomed sight. Six greatly excited boys were running back and forth from the barn to the ca.n.a.l, bearing all manner of mysterious bundles, which were carefully deposited in a freshly painted scow. Yes, all six of us were there.

A UNIQUE ALARM CLOCK.

We hadn't expected to see Reddy Schreiner at such an early hour, for he was always a sleepyhead, and no alarm clock would ever wake him. But this was an exceptional day, and, besides, Reddy was quite an original chap. He had taken one of the borrowed roosters into his room the night before, and when, early in the morning, Mr. Chanticleer had mounted the footboard of the bed, flapped his wings and given vent to his opinion of a boy who persisted in sleeping at that late hour of the day, the noise was too much for even Reddy's drowsy sensibilities.

[Ill.u.s.tration: Fig. 65. Off to the Island.]

THE TRIP TO THE ISLAND.

[Ill.u.s.tration: The Ledge below the Goblins' Platform.]

[Ill.u.s.tration: The Camp at Willow Clump Island.]

Our scow was not large enough to carry all the things we had to take with us, but as Mr. Schreiner was going to take Uncle Ed up in his wagon, we left the rest of our luggage for him to bring along. We boys walked the eleven miles up the ca.n.a.l to Lumberville, towing the barge.

It was a tiresome task; but we divided the work into two-mile s.h.i.+fts, two boys towing at a time and then each taking a mile ride as steersman in the boat. It was about noon when we arrived at Lumberville, and then we had to unload our boat before we could haul it out of the ca.n.a.l and down to the river. The river on the Jersey side of the island was so shallow that we waded across, pus.h.i.+ng the boat ahead of us. The current was too swift to permit of rowing, and it was rather hard for us to keep our footing. But we managed to reach our destination finally without any mishap. The island was thickly wooded, except for a small clearing where we landed. The first thing we did was to unpack our eatables, and Jack, the cook, soon had an appetizing pan of bacon and eggs sputtering on the kerosene stove.

[Ill.u.s.tration: Fig. 66. Dragging the Scow over to the Island.]

PRELIMINARY EXPLORATION.

As no better position offered at the time we pitched our tent in the clearing, pending a thorough search for a more suitable place elsewhere.

Around the tent we dug a trench about a foot deep to prevent water from entering our quarters when it rained. It was about time for Uncle Ed and Mr. Schreiner to appear with the rest of our luggage, so we did not have time to do much exploring, but sauntered southward along the sh.o.r.e, always on the lookout for their arrival. About a quarter of a mile from the tent we came across the wreck of an old bridge, which had been washed down by some freshet. This was a great find, and served us many purposes, as will appear later.

While we were examining the wreck we heard a distant "halloa" from the mainland. There was Uncle Ed sitting on a pile of goods on the railroad bank looking for all the world like an Italian immigrant. We answered with a shout and scrambled back to the clearing. Then we ran splas.h.i.+ng through the water, pus.h.i.+ng the boat before us. It didn't take us long to load up and carry him back to the island.

A RUSTIC TABLE.

[Ill.u.s.tration: Fig. 67. The Rustic Table.]

Uncle Ed entered into our fun at once. He was as enthusiastic as a boy over the surroundings, and when we told him of the old bridge he started right off to investigate, taking the ax with him. Soon he had pried off a number of the planks, which we used for a flooring to our tent. Then he built us a table out of four forked sticks, driven into the ground, and supporting two cross sticks, on which a pair of planks were laid.

THE SMALL FILTER.

"Well, now, boys," said Uncle Ed, wiping the perspiration from his forehead, "I am as thirsty as a whale. Where do you get your drinking water? Is there a spring on the island?"

We told him that we used the river water.

[Ill.u.s.tration: Fig. 68. The Small Filter.]

"What, river water! That won't do at all," he cried. "You'll all have the typhoid fever. We must build a filter. I brought some charcoal with me for this very purpose."

Taking one of our pails he broke a hole in the bottom of it and stuffed a sponge in the hole. A layer of small stones was then placed in the pail, over this a layer of broken charcoal with the dust carefully blown out, then a layer of clean sand, and finally a layer of gravel. Each layer was about two inches thick. The pail was suspended from a branch in a cool place and proved an excellent filter, the water trickling out through the sponge being perfectly pure and sweet, no matter how dirty it had been when poured in; but the capacity of the filter was too small, and Uncle Ed said he would make us a larger one on the morrow if no spring was discovered in the meantime.

The sun was getting low in the west, and we therefore postponed the exploration of our island until the following day. We had been up since four o'clock that morning and had done some pretty hard work; so, immediately after supper, we turned in and, lulled by the murmuring of the river, were soon fast asleep.

THE BARREL FILTER.

[Ill.u.s.tration: Fig. 69. The Barrel Filter.]

Immediately after breakfast the next day we started out in two parties to search the island. The only discovery of any moment was that made by Dutchy's party, which found a small island separated from ours by a narrow channel, through which the water ran like a mill-race. No spring was discovered, so Uncle Ed had to construct his large filter. Bill and I went over to Lumberville in search of a couple of cider barrels and a pailful of charcoal. The barrels were placed one on top of the other after cutting a large hole in the top of the lower barrel, and a smaller one in the bottom of the upper one. The latter opening was covered by an inverted saucer. Over this we spread a 3-inch layer of coa.r.s.e sand, then a 2-inch layer of charcoal, a 4-inch layer of clear, sharp sand, and a 2-inch top layer of gravel. The lower barrel was provided with a faucet, through which we could draw off the filtered water as desired. In order to keep the water cool we placed the filters in a shady place near the river, and piled up earth around the lower barrel.

"Now, boys," said Uncle Ed, "form in line there, and we will go through a fire drill."

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The Scientific American Boy Part 4 summary

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