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X. Experiments, carried out onto layers deposited on Si-111 substrates, give the two main features of amorphous solids: (i) the layers do not yield any Bragg peak; (ii) setting the angle of incidence ˆ 5 and scanning the detector angle, each layer gives a ''flattened hump'' ranging from 15 to 35 This flattened hump is mainly unchanged when h ranges from 40 nm to 1 m. Since the ''hump's height/noise'' ratio worsens at small h, we cannot exclude that this ''hump'' is somehow deformed at small h. Should this be the case, it might lead to a small variation of the elementary dipole p 0 (or of the TLS density of states P P) with h. This is of no consequence here since, the standard noninteracting TLS model