Abstract: A silver halide light sensitive color photographic material is disclosed, comprising a support having thereon a silver halide emulsion layer, the photographic material further comprising a 2-equivalent yellow coupler exhibiting superior dye forming capability and enhanced solubility in a solvent, and represented by the following formula:

Abstract: A film unit is provided with an unexposed film chamber in which an unexposed film is accommodated beforehand; a photographing lens through which the unexposed film is imagewise exposed; a film wind-up chamber; a spool provided in the film wind-up chamber, holding an end portion of the film, and having a rotation center on which the spool is rotated so that the exposed film is wound up into the film wind-up chamber; a spool engaging member for engaging with the spool; and a wind-up operating member located at an eccentric position from the rotation center of the spool and for engaging with the spool engaging member so that the wind-up operating member rotates the spool through the spool engaging member.

Abstract: The improvement in an acoustical musical stringed instrument having a flat soundboard with opposite top and bottom surfaces employing a plurality of elongated struts secured to the bottom surface of the soundboard in spaced apart positions. The struts cause the first side of the top surface of the soundboard to function as if it were stiffer and relatively short and wide and cause the second side of the top surface to function as if it were more compliant and relatively longer and narrower. The struts are progressively graduated in width and length from shorter and wider struts secured to the first side of the bottom surface to longer and narrower struts secured to the second side of the bottom surface whereby when the strings of the instrument are plucked to produce sound, the resonant frequency is enhanced by increasing the number of harmonics of higher frequency of the resonant frequency and the richness of sound is substantially enhanced.