Salmson D-211 Super Phrygane - Version of the aircraft 1951 years;

Salmson D-21 Phrygane - Four-post-war version of the aircraft;

All my adult life I have wished to see the cemented case of a caddisfly larva.

Salmson Phrygane - French light aircraft manufactured by Aircraft «Salmson» with 1933 years.

Look for aquatic macro-invertebrates like the unusual caddis fly that builds its own house out of small pebbles and vegetation.

Is the caddis worm's precious case the work of the insect or the work of the artist?

Salmson D-2 Phrygane - The basic production version of the aircraft;

Salmson D-4 Phrygane Major - A modified version of the aircraft, equipped with an engine Salmson 9Nd.

Salmson D-1 Phrygane - A basic prototype of the aircraft, aircraft engine equipped with Salmson 7Aca;

In short, the caddis worm builds with more or less everything that comes from the plant or the dead mollusk.

Your artistic involvement likewise boils down to plunging the caddis worm into unusual conditions and, in so doing, triggering an unforeseen reaction.

Here, as in your aquaria, you cannot say the caddis worm is trying to hide itself in its case---quite the contrary.

As a trainer aircraft, model Salmson Phrygane not positioned because of the lack of this paired controls.

The caddis house, nobody could doubt, is an adaptation, evolved by Darwinian selection.

Then how does the caddis worm manage to remain on the surface without the support of the grasses, considering that itself and its sheath are both heavier than water?