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January, 1914 that time to this, and they were built with a dead tise: of: 3 in, in:-24. ft. You will notice in this chart that that model to which I have referred shows up most satisfactorily, both for deep water and shallow water, as compared to the others. Joseph H. Linnard:--I have been very much interested in this paper, and what I wish to say is more in the nature of an inquiry than any- thing else.. I notice that in Mr. Tay- lor's experiments only one_ shallow draft was used. I dare say that time and pressure of work in the basin, or other circumstances, were such as to prevent a series of experiments at different drafts. I think it might be interesting if Mr. Taylor would state something of the nature of the false bottom used, and whether it was con- sidered that additional information of an important character would be derived from a series of experiments at different drafts. Harold A. Everett:--I ask Mr. Tay- lor if, in his judgment, the results would be affected if block coefficients greater than 68 were taken, perhaps 78? DoW. Taylori-As recards, Prot. Sadler's statements, I was very glad to find that his results have con-. firmed those we found, because he has done a great deal of this shallow THE MARINE REVIEW water work and we have done very little, and the results were rather un- expected: So EF am glad that we are in agreement on'that point at any rate. We have found in most of our work before this, which was con- firmed by these experiments, that, strange as it may seem, the rather full midship section is so advanta- geous from the point of view of re- sistance, that I am glad such an au- thority as Stevenson Taylor agrees with that in regard to the profes- sional practice. Many people who build vessels are not willing to go so far in that direction, as might be indicated would be desirable from the results of the model basin experi- ments. As regards Prof. Everett's : ques- tion, if you examine the diagram you will see that the reduction of re- sistance has apparently reached its limit at a block of 64. For the blocks 6&8 there is a very slight increase, and I should anticipate that if we had carried these experiments in this par- ticular case to a block of 78, driving the: 78 block. in. the. same manner, there would have been a very appre- ciable increase, probably a material increase, over the 68. The minimum probably occurs somewhere between 64 and- 68. With reference to Mr. Linnard's question about the false 19 bottom, it is a fact that time would not admit of the experiments being made at more than one draft, in fact, we were barely able to finish the shallow water experiments in time to have the paper in the hands of the printer in time for publication. The false bottom used was the bottom made originally for some experiments for the New York Harbor line board. They wished to have some experi- ments made of the disturbance of the water caused by the passage of ships through shallow water. It is 200 ft. long, and simply a plain wood- en bottom, an inch thick, made in sections about 5 x 8 ft., and secured to steel beams which are heavy enough to: hold it down, .[t 16 ar ranged so that we can put it in in two days and take it out in one day. We have had other experiences with false bottom, and we find in towing these models, that the model which has a resistance of only one or two pounds, exercises a very strong upward suction on the bottom, when it is close to the bottom. We found it necessary to use 15-inch I-beams, quite stiff, placed 10 ft. apart, so as to make sure that the bottom does not rise up and attempt to lift the model. The upward flow resulting from a comparatively small horizon- tal flow is surprising. Experiments on the Fulton Prof. C. H. Peabody Relates the Results of His Experiments With Bilge Keels HE second paper read was Prof. i C. H. Peabody's paper on the subject "Experiments in the Ful- ton; Effect in Bilge Keel", abstracted as follows: The experimental boat Fulton was used during the past summer to in- vestigate the resistance of bilge keels, for which purpose it was well adapted both by the precision of results possi- ble and because the stream lines are known. The normal bilge keels were made 15 ft. long and 3 in. deep; bilge keels 6 and 9 in. deep were also tested. Tests were made in addition on keels 3 in. deep and 19 ft. long. The apparatus on the Fulton is that described on page 87, volume 19 of the Transactions. The primary observa- tions taken were (1) time on the course, (2) thrust of propeller, (3) revolutions of the propeller, and (4) in- put to the electric motor. The assembling of results was con- veniently made by plotting all' obser- vations with revolutions for abscissae. Sample curves are given of (1) speeds in knots per hour, (2) thrust of the propeller shaft in pounds, and (3) input to the electric motor in kilo- watts. The first curves show a slight current at times, due probably to a -wind acting before the tests; this cur- rent was in all cases less than a tenth of a knot per hour; it necessitated runs both with and against the cur- rent, from which the mean speed was definitely determined. The thrust was found to be practically the same for a given number of revolutions in all cases, with bare hull and with the several keels; consequently the thrust curve was well located. The determin- ation of power (input to motor) was quite satisfactory; tests made at an interval of two weeks gave identical results. In order to obtain results as indi- cated it was found necessary to run only when weather conditions were ideal; though such conditions might come at any time, day or night; the conditions were most frequently found at four o'clock in the morning. The results of the experiments are reported in two forms:--. (1) The ratio of the increment in propeller thrust due to the addition of a given pair of bilge keels, to the computed frictional resistance of the kédls. ' (2) The ratio of the increment in power on account of the addition of a pair of bilge keels, to the computed power to overcome the friction of the keels. In connection with the presentation of the paper, Prof. Peabody said: "I wish, in addition to referring to some of the items which are given in the abstract, to call your attention to a few of the figures. Having the Fulton and the means of measuring the thrust