Psychophysics: reply: Putting plaids in perspective

When we look at Anderson's Fig. 1a, or at just about anything else, we see surfaces and boundaries, contours and intersections, edges and angles. These complex, interpreted image features might well be the stimulus elements that stereo mechanisms analyse to recover depth. But are they?     

拟管螺属三新种记述(肺螺亚纲:柄眼目:烟管螺科:管螺亚科)

报道我国烟管螺科、管螺亚科、拟管螺属3新种：即西昌拟管螺新种Hemiphaedusxichangensissp.nov.,勐仑拟管螺新种Hemiphaedusamenglunanensissp.nov.,灌阳拟管螺新种Hemiphaedusaguanyangensissp.nov．．对新种进行了描述,对其近似种进行了讨论和比较．