Sir,?Though it is a rare disease in Europe, nyctalopia is not so uncommon in the tropics. There are two varieties of night-blindness?one symptomatic and the other idiopathic. The etiology of the disease is very obscure, and much more varied and uncertain is its treatment too. Dr. Tweedy says that " the prognosis of the symptomatic night-blindness is generally unfavourable ; while that of the id...

Night vision goggles (NVG’ s) are being used increasingly in military and civilian environments. Despite the use of these devices, relatively few tests exist to assess visual performance through NVG’ s. Hyperacuity tasks may provide a sensitive index of performance through night vision devices. In this study, grating vernier acuity was measured through NVG’ s. AS reported previously, a power la...

"Night of the Mist" is the moving and deeply expressive statement of a part of the life of a 21 year old Hungarian Jew. From the spring of 1944 when his country was overrun by the Nazis, to the end of the war when he found his way hack to his home town, Mr. Heimler takes us with him through the terrors and pain of Auschwitz, Troeglitz and Buchenwald. And as we read we can catch vivid glimpses o...

Enter motherhood I was elated, apprehensive, and exhausted when I arrived home with my first baby, Sarah. I also had a mission: I wanted to breastfeed. I had read The Canadian Mother and Child1 and every available book on breastfeeding. I believed that if I were to bottle feed my baby, it would be a failure—my failure as a mother and a woman. When we came through the door of our apartment my mo...

Night-time leaf conductance (g(night)) and transpiration may have several adaptive benefits related to plant water, nutrient and carbon relations. Little is known, however, about genetic variation in g(night) and whether this variation correlates with other gas exchange traits related to water use and/or native habitat climate. We investigated g(night) in 12 natural accessions and three near is...