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From the March 26, 1932, issue

EASTER LILY UNFOLDS TALE TO X-RAY’S PIERCING EYE Ordinarily it is necessary to pull a flower to pieces to find what it is doing at any given moment in its development–and that, naturally, precludes one from following its development any further. One must turn to other flowers, at other stages of their unfolding, and ruin […]

Seaweed Sights

Should dabberblocks, murlins, and sea whistles come up in conversation, here’s the page for figuring out what’s going on. The seaweed Web site, hosted at the National University of Ireland, Galway, offers a gallery of glamour photos of prominent seaweeds, as well as an introduction to the seaweeds we may not have realized we were […]

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If an animal can boost its immune system in response to shortening days, why would it not keep its immune system operating at that higher level all the time? Is there some physiological cost to maintaining a higher level of immune response? Michael LehnerGreenfield, N.H.