The renal corpuscle is where blood filtration starts and it includes the glomerulus - the tiny bed of capillaries - and the Bowman's capsule which is made of renal cells that surround the glomerulus.
Well, now examine the leaves. Oh, I see they are all covered over with little bristles and when I examine them with the glass, I see a little bag, filled with a juice like water, at the bottom of each.