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southern end of the salt water harbor. This will add another twenty-four miles to Seattle's water frontage.

But this isn't all that Seattle proposes to do to the corporations. It is proposed to bring the entire harbor under the control of a harbor commission, consisting of perhaps three members. This board will be a government within itself and will have absolute charge of the water frontage, docks, warehouses and everything that is connected with the commerce of the port. Ultimately it is proposed to establish a belt line railroad under control of this harbor board. At this time Seattle has no municipal or state piers or docking facilities.

No true Seattleite admits that his harbor will not be the largest and best in the world when completed. If you ask a Seattle man how he figures his port will capture the lion's share of the Oriental commerce, he immediately will lead you to a globe. He cannot figure out his arguments on a flat map of the world's surface. After carefully leading you up to the globe he will prove to you that as the earth is smaller around as you go north, the path across the northern Pacific Ocean from Puget Sound to the Japanese ports is at least 1,000 miles shorter than it is from California. He also will tell you that boats sailing to the Orient from the southern part of the coast go almost directly north until about opposite Puget Sound and then take a westerly course out past the end of the Aleutian Islands. A thousand miles is

some trip for a big vessel, he will tell you and therefore, the future trade of the Orient will be handled through the port of Seattle.

As to the Panama Canal trade he will point out arguments similar to those of other cities, with the additional point in Seattle's favor of a fresh water harbor and closeness to the markets of the Pacific northwest.

To the landlubber the real value of a fresh water harbor is not apparent. One advantage is that salt water animal life cannot live in fresh water. An example of what this means to shipping is shown by the fact that six hundred tons of barnacles were scraped from the bottom of the armored cruiser South Dakota before it made a recent voyage to the Orient. It is necessary to dock and scrape ocean going vessels at frequent periods in order that the sea growth and foulness may be removed. By entering fresh water this growth is removed without the aid of man. With a fresh water harbor thousands of dollars would be saved annually by the shipping interests of the Pacific.

Tacoma, on Puget Sound, has voted a bond issue of half a million for a municipal pier and harbor improvements and is preparing to take the first step in throwing off the yoke of the railroads. This port with its closeness to the grain growing regions is one of the big wheat handling ports of the coast and expects to participate in the benefits of the Panama Canal. Tacoma harbor has plenty of dec]) water, but its citizens, feel they must be up and doing in order to handle the increased shipping expected.




HOW SEATTLE IS STRIKING AT THE RAILROADS FOR OCEAN TRADE. The corporations having gobbled tip the salt water frontage. Seattle is putting through a fresh water canal. Lakes

Washington and Union are links in this canal.

To the ordinary individual the gigantic proportions of the Panama trade are not apparent. But when it is known that eighty-two million dollars' worth of merchandise, originating in the United States crossed the Isthmuses of Panama and Tehuantepec last year, some idea of the enormous trade that will be opened by the canal may be gained. Most of this merchandise was moved across the isthmuses for the mere purpose of transferring it from one section of the United States to another; from the eastern to the western coast or from the western coast and Pacific islands to the Atlantic seaboard. Fifty million dollars' worth of this total originated on the eastern coast and moved westwardly across the isthmuses, four-fifths of it then passing northward to the Pacific Coast of the United States, the other fifth being distributed along the coast of Mexico, Central and South America.

Thirty-two million dollars' worth of goods went eastwardly, two-thirds of it originating in Hawaii and the remainder along the western coast of the United States. The Hawaiian sugar which formerly went around the Horn, now passes over the isthmus by railroad and is transferred to boats and taken to the refineries of Philadelphia and New York. The


returning steamships carry merchandise for the western coast.

Figuring even on the present commercial conditions of the section of country surrounding Los Angeles only, $20,000,000 in freight rates on non-perishable goods alone will be saved in a year when the canal is completed. It is estimated conservatively that a million tons of non-perishable freight moves between the eastern states and the Los Angeles territory. The present rate is $26 a ton, while the all-water route will make the rate less than $6, thus effecting the enormous saving. A saving of $6,000,000 to the orange growers of southern California will be made.

When the canal is finished Pacific ports will be within twelve to fourteen days of New York in eighteen-knot vessels. This is figuring that it takes twelve hours to get through the canal. Between the Pacific Coast and European ports the trip should be made in three weeks in eighteen-knot ships. This is a comparatively short trip for the modern vessel. So the Pacific Coast folks do not feel that they will be extravagant in spending one hundred millions of dollars in improving their harbors. They figure that with the canal trade in full swing the hundred million could be saved in a year or so, in the reduction of freight rates. I'.esides, it's worth it to get this hearty swipe at the railroads.




IN the basement of a large stone building at Forest Hills, Massachusetts, there are several thousand mice and rats. Fortunately for the other occupants of the building they are all in wire cages. Unlike ordinary rats and mice in ordinary basements, they are cheerfully fed and nicely taken care of. And to complete this extraordinary situation the same basement contains several hundred rabbits and guinea pigs.

The stone building is the Bussey Institution, the headquarters of the agricultural department of Harvard University, and the basement is occupied by the animals used by Dr. William Ernest Castle, of the Harvard Zoological Department, as material for a continuous series of important scientific experiments. Without going so far as to consider this host of guinea pigs, rabbits, rats, and mice literal representatives of the human race they nevertheless pass their lives in affording material for the study of phenomena upon which the continuance of the human race, at its progressively highest level, is obviously dependent. The problems in which they are the living factors in the equation are those of heredity—the transmission of traits from parents to offspring and the possibility of determining in advance the characteristics that will appear from the mating of individuals with whose own characteristics the investigator is already familiar. Despite the occasional startling announcements of sensational journalism, however, men of science generally admit that human beings are more complicated than guinea pigs; and students of heredity in the lower animals turn their practical attention rather to improving live stock than to improving its owners.

Granting all this, and at the same time remembering Mr. Gilbert Chesterton's remark that the first thing the perfect

race of men produced by scientific marriage would do would be to smash the system of scientific marriage, it is fair to argue that the fundamental principles of heredity revealed in the color of a flower or of a guinea pig exist also in the more complicated cases of human inheritance. If study of guinea pigs can throw light on human inheritance, knowledge of the mysterious world we live in is advanced in proportion. The "reversion to type," for example, that every now and then produces a human being surprisingly unlike either of his parents has its analogy when a yellow rabbit is mated with a black rabbit and the result is just such a little gray rabbit as runs wild in the woods. Black rabbit or yellow, each parent contained a different element of the ancestral gray condition from which they had descended. And the combination of these two elements reproduced the gray color of the little rabbit, just as oxygen and hydrogen when brought together produce water. And this, moreover, happened in accordance with a wellestablished law of heredity. The law was discovered fifty years ago by an Austrian monk studying the flowers in his cloister garden; and it has been proved just as true of animals as of plants by such experiments as those of Dr. Castle with his scientific menagerie in the Bussey Institute basement.

Mendel's Law of Heredity, as this principle is known to scientists, was the result of a series of experiments in the cultivation of garden flowers. The good monk. Gregor Mendel, having leisure, curiosity, and a scientific mind, crossed different varieties of ordinary garden peas and carefully noted what happened. Long continued experiment showed that under certain conditions certain results would follow with sufficient uniformity to establish a law. If a pea with yellow

Albino Female Guinea Pig Whose Descendants
Would Normally Be White.

The ovaries of the black
guinea pig were trans-
planted into the body
of the albino.

cotyledons—as botanists call the seed leaves of young peas—was crossed with one having green cotyledons all the peas that grew from this crossing would have yellow coty1 e d o n s. Apparently what had happened was the extinction of the green characteristic, and if these peas were crossed with other peas that had yellow seed leaves, yellow was still the characteristic seed leaf color in the immediate descendants. But if the peas descended from the first crossing were self-pollinated, or crossed with each other, the result was an average of one green seeded pea for every three yellow ones; and if these green seeded peas were separated and self-pollinated the resulting peas were all green seeded.

In other words, each of these little peas had inherited a characteristic—the green color of the seed leaf—from the first


Black Female Guinea Pig Three Weeks Old. Her descendants would normally be black.

Albino Male Guinea Pig With Whom The Albino Guinea Pig Was Mated.

crossing, but this color characteristic did not become visible until two of the peas in which it was latent were brought together; and in every four descendants from this second crossing only one individual showed the inherited green seed leaf color, was dominant, in that

Yellow, in short it was most likely to perpetuate itself and green was recessive because it could be expected to appear visibly only in a minority of the peas that inherited it. But when it did appear visibly, the result of a union between two of these peas was a continuation of the characteristic green color in the whole family of descendants.

Mendel's Law of Heredity divides transmissible characteristics into these two kinds—dominant and recessive. A recessive characteristic will be invisible in all descendants of the first generation, but will reappear, usually in the proportion of one to three, whenever the offspring of this first generation are mated together; and the recessive characteristic will then breed true or perpetuate only itself. The definite proportion of one to three is said by those scientists who devote themselves to heredity to be "as fundamental to a right understanding of heredity as the law of definite proportions in chemistry." It applies to guinea pigs, mice, rats, and rabbits as uniformly as it applies to the garden flowers. And one of the results of scientific observation of the development of hereditary traits in these little animals points to an explanation which would undoubtedly have deeply interested the Austrian pioneer in his flower garden. The characteristic of color, green or yellow, in the peas with which he was experimenting was resident not in the flowers themselves but in the germinal material which formed the seed leaves of these flowers; and the germinal material of a yellow seed leaf, could it have been transplanted into the body of a flower whose seed leaves were normally green, might have gone on producing yellow seed leaves in its descendants just as if it had never been transplanted. In the case of the animals at the Bussey Institute it has been shown that a surgical operation can make a white guinea pig capable of bearing black offspring.


THE DESCENDANTS OF THE TWO ALBINO GUINEA PIGS. The black color of these little pigs shows that black was the dominant color characteristic and was contributed by the transplanted ovaries of the black guinea pig. In other words, although born of albino guinea pig No. 2. these little guinea pigs are apparently the descendants of black pig No. 1 and albino pig No, 3.

To say that science watches and records the development of hereditary peculiarities in these lower animals has perhaps already set the reader wondering how these characteristics can be detected. To most of us one guinea pig or rabbit looks very much like another, and one mouse or rat very much like another mouse or rat. Fortunately for science,


Size usually characteristics. left. The skulls middle.

Skulls Of Three Rabbits. expresses itself as a blending of maternal and paternal The maternal skulls are on the right: the paternal on the of the descendants are the intermediate ones, in the

there are a considerable number of useful differences. There are albino guinea pigs ; black guinea pigs ; guinea pigs that are only part albino; guinea pigs with long hair like an angora kitten; and yet other guinea pigs that are "rosetted"—a word that describes them when their hair grows in such fashion that they look as if they were always out in windy weather and the wind blowing from every point of the compass. Rabbits have been so long bred as pets that the fanciers have developed many characteristics that are immediately useful in tracing heredity. Rats and mice in bewildering variety have also been produced by the hit-or

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