After the discovery of high-temperature superconductivity in the La-Ba-Cu-O [1], Y-Ba-Cu-O [2, 3], Bi-Sr-Ca-Cu-O [4-7] and TI-Ba-Ca-Cu-O [8, 9] systems a large number of papers have been published. It is now very well known that the oxygen deficiency effect is very sensitive to decide whether the Y-BaCu-O or the Bi-Sr-Ca-Cu-O, etc., systems would show metallic, superconducting, semiconducting, insulating or other behaviour. These differences in the material behaviour depend on subtle changes in the stoichiometry or structure. The actual mechanism of this oxygen deficiency and the superconducting and/or other behaviour of such highly stimulating technological materials have not yet been elucidated. Theoretically it is realized that there is a great deal to learn about the electronic correlations in the intermediate regime separating the localized and itinerant behaviour. It has been reported in an earlier letter [10] that the BiaSr3Ca3CuaOx (denoted by 4334) system can even be made in the forms of glass, semiconductor and superconductor, which gives rise to other problems in understanding the mechanism of oxide superconductors. In this letter we report the magnetic properties of such a 4334 glass and its superconducting analogue. The actual method of preparation of the 4334 glass has already been discussed in [10]. In this method a mixture of Bi203, SrCO3, CaCO 3 and CuO in appropriate ratios (for the 4334 sample) was ground thoroughly, using a mortar and pestle. The mixture was melted in a platinum crucible and quenched quickly in the form of thin plates. The X-ray diffraction and the scanning electron micrograph pictures showing the amorphous character of 4334 glass were also shown in [10]. The magnetic susceptibility of the powdered 4334 glass samples (weight 100mg) was measured with a Curie-type susceptibility balance previously developed and standardized in our laboratory [11, 12]. The temperature of the sample was measured with a copperconstantan thermocouple (supplied by Dr T. Atake from Osaka University, Japan). The error in the presently reported diamagnetic susceptibility data lies within __+ 5% and the corresponding error in the temperature measurement is about +__ 0.5 K. Fig. I shows the static magnetic susceptibility, Zg, of 4334 glass as a function of temperature. This glass is found to be feebly paramagnetic (after diamagnetic correction) and is almost independent of temperature in the range 300 to 80 K, and is featureless. The superconducting 4334 sample was obtained by slow anneal-