Show in the many man inventions connected with torpedo boats and torpedo catchers the question of invisibility seems to be yet unsolved in proportion as the seagoing sea going qualities of this type of vessel ire are improved by increased size so does the essential quality of a to torpedo ILdO boat the power of remaining unseen disappear paints of various tints have been trel but no do particular one lias has been declared the best the united states xiam navy v has adopted a greenish shade to correspond ni with fill tile the sea germany has all adopted opted a muddy yellow and Ira france uce after experimenting with g gray gra v lias his finally decided upon black it Is admitted by exports that a 1 I black boat can call be perceived with glasses at a greater distance than one painted gray that a 1 I gray boat can call be distinguished under the electric light much more inore easily than 1 1 I black one aind in thit that one palli painted ted can be seen nt at a great distance by a practised practiced observer station stationed in a good position but blieu the question 0 of paint his has been boll bogod ell the great enemy to invisibility smoke kc remains in ili tile the daytime the line of smoke from tile the pipe may inny bo be distinguished above the horizon before the outlines of ill the hull hall of the boat anre seen while it at night the ile of 1 1 torpedo boat under way N will flame finale like a chi chimney niney on tire lire these a re llo lelus yet to be solved by naval experts |