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TAE Marine REVIEW SCIENTIFIC LAKE NAVIGATION. Clarence E. Long's course of instruction in scientific lake navigation will begin. in the next issue of the MARINE RE- view. Mr. Long is a practical navigator. He is not a graduate of any college, but picked up his knowledge at first hand. What he got out of books he says any lake master can get out of them. Mr. Long recognized however, in his studies, the fact that no simple work on lake naviga- tion existed. He had to extract his information from pon- derous volumes on navigation in general. He saw at once the need of a simple work devoted to the navigation of the chain 'of lakes, free from all extraneous matter, and he set about to prepare it. He published monthly at Sturgeon Bay a little nautical magizine in which he gave his instructions clearly, and these numbers he is now binding into one com- plete volume. The course published in the little magazine will be amplified by the Marine Review, and in addition a question and answer' department will be instituted which every master on the lakes is invited to address. No one master can ask a question without bettering everyone. Careful attention to this course will make every master on the lakes a better navigator. Navigation is one of the most interesting sciences we have, and it 'surprises one to find how quickly a knowl- edge of the same may be obtained when it is explained in a simple, common sense way by one who understands the theory and practice of the science. All that is necessary is to preserve each number of the Marine Review, and as these papers contain all the essential information on the different subjects on which they treat, it is evident that, as a whole, these papers will constitute a valuable assemblage of facts, formulas and processes of the study, and will serve as a reference work -and be of incalculable value to the student. The originality of Long's methods, the simple rules for solving the various problems, and the correct prin- ciples upon which they are. based, have been greatly ap- preciated by the lake nautical profession. We have ever dealt with the science in such a common sense, practical and. business-like way, as to make the once abstruse cal- culations appeal clearly to the intelligence of the sailor, who is a stranger to the various formulas given in al- most all works on navigation. The scientific formulas upon which the various problem's are based are not con- sidered, but clear, common sense explanations ave given in their stead, so that the subjects become intelligible and are adapted to the needs, both of men with a limited edu- cation and those of technical training. - There are those that will probably argue that naviga- tion cannot be used to advantage here on the lakes. Deep-sea navigation by astronomical observation, ie, finding the position of the vessel--latitude and longitude-- by observing the heavenly bodies, cannot be used to. a practical advantage, the distance on the lakes being too short to permit it. But this is not all there is to the science. On the lakes the compass is the paramount study, and it is of the greatest importance to the naviga- tor. It is a study all by itself, and is one of the deepest in the entire nautical sphere, requiring and involving a greater amount of knowledge and covering a wider field than any other single subject of the science. It is, in fact, the foundation upon which the science is based. Owners, ship builders and masters do not bestow on the compass the amount of consideration which it justly merits. It 1s preeminently the instrument upon which the safety of the vessel depends, and justly ranks first in importance. As to their ability as pilots and seamen, lake captains have not their equals in the world. The manner in which they handle their boats through the intricate waterways connecting the lakes; or ,bringing them alongside of a wharf invariably brings forth praise from those who see it and are competent to judge. All then that the lake captain lacks in filling every need of his station is the science of: lake navigation, Bear this in mind: Increase your learning and you in- crease your earning power. The world has large re- wards for the man that can do things--and it is only the man who knows the why and the how who accompkshes things easily, quickly and accurately. To properly fill the various berths on board ship a man must know both the theory and practice of his calling. Our navigation course by self-instruction enables you to increase your income by imparting practical, useful and necessary in- formation in your work at a very small cost. Start right by getting the right foundation--master the scientific principles underlying your work. To advance you must know "why" as well as "how." Perfect yourself in your chosen vocation--master it and you will eventually reach the top. ratline. 2 The more knowledge a man has the better he is pre- pared to fill any position he is called or necessitated to fill in the various pursuits of life, from that of the most menial to that of the most honorable; and it must be apparent to all that the more proficient a sailor, wheels- man, mate or captain is in the science of navigation, the more profitable, safe and desirable man he is to his em-. ployer and himself. Vesselmen and insurance men are becoming more and more convinced of this fact and mariners themselves see and realize it. Navigation is a book study, and a man might just as well go to sea to learn to read and cipher as to expect to acquire a correct knowledge of navigation on the deck of a vessel. Do not confound navigation with seaman- ship. The place to learn seamanship is on ship board. The average practical lake man is a first-class seaman, but a poor navigator. Many men imagine that navigation is a very difficult study, and a great amount of time is necessarily consumed in learning the science, but this is a mistaken idea. Prac- tical navigation is extremely simple and may be learned quickly. Therefore, let it. be understood that any man, however limited his education, may, provided he possesses ordinarily intelligence, learn practical navigation and be- come a competent navigator in a very short time. Our great point in all the exercises of this navigation course is to lead the student directly and easily to a clear comprehension of the steps in the various 'solutions and the necessity for them. These solutions are accompanied with explanations, illustrative and otherwise, which enable the student to comprehend all that he needs to know about the "whys" and the "wherefores" of the operations. By these means the student is led to employ the 'simplest methods of solution because they are generally natural methods, and to understand and explain every step in the A student who has been trained in this manner process. er forget a process or rule, because he can devise will nev the process and frame the rule at will. Joseph Supple, Portland, Ore., is building a new steamer for the Kitsap Transportation Co., of Seattle, Wash.