Popular Science Monthly 



873 



A power-boat equipped with a short fin. The position and construction of the fin make it possible 

 to turn this boat around in its own length. This is an important feature in a crowded harbor 



two-hundred-and-fifty-foot float would have 

 a fin twelve feet in width. The engine 

 would take up four feet, which would leave 

 four feet on each side for passageway. On 

 such a large boat a great part of the engine 

 would be above the fin and there would be 

 plenty of room to get at any part of the 

 mechanism. 



Small boats, like motor-boats, have a 

 narrow fin and a correspondingly small 

 engine. All that is necessary in such boats, 

 is arm space around the engine. A man can 

 reach any part of the engine from the 

 floor above it. 



Zip! Zip! The Electric Fish Scaler Is 

 Cleaning the Fish 



ANEW device which has re- 

 cently been patented by 

 Louis Weinberg, of Chicago, will 

 enable anybody to scale a fish in the 

 shortest possible time and with very 

 little effort. This invention looks 

 like an old-fashioned music-box 

 cylinder, except 



Can a Fish Frozen in the Ice Be 

 Restored to Life? 



OCCASIONALLY a "fish" story gets 

 into circulation which has such a 

 scientific flavor that it challenges the credu- 

 lity of even the very well informed. To 

 this class belongs the story of the resurrec- 

 tion of a fish called the "Chindagaks," 

 which, it is reported, will come to life again 

 after having lain frozen solid in the ice for 

 months. 



According to the authorities connected 

 with the United States Fish Commission, 

 the Chindagaks is a newcomer not only 

 into the field of fish literature but also into 

 the lists of known species. None of the 

 experts on the Commission has heard of it 

 before. They 



a — 1„-~ 



Handle* 



Revolving base 



that the teeth 

 are mounted on 

 a tapered body. 

 The scraper 

 blades or teeth 

 are larger and 

 farther apart on 

 the thick part of 

 the body and 

 finer and nearer 

 together where 

 it tapers. The 

 coarse blades 

 are to be used 

 on large fishes 

 having heavy 

 scales. 



declare that 



when a fish is 



entirely frozen, 



life is extinct; 



though it is 



possible for a 



fish to appear 



to be frozen 



when its flesh 



isonly stiffened 



from the cold. 



The blood is 



still uncongealed, therefore 



the fish is still alive and will, 



of course, revive gradually 



when placed in water of the 



proper temperature. 



Even this will happen only 

 to a fish which has been 

 caught through a hole in the 

 ice and left lying exposed on 

 Turn on the current and scale your fish the ice surface until 



electrically. A flexible shaft runs from Jt nas become Stlt- 



an electric motor to the tapering scraper fened from the cold. 



