A Survey of Selected Areas in the Galactic Plane with ISOCAM

Seven 11.6' 11.6' fields along the inner Galactic plane were imaged by the Infrared Space Observatory's ISO- CAM camera to investigate the large scale properties of the Galaxy. We present results from this GPSURVEY program at wavelengths of 10 and 15 m as well as some complementary observations from the ISOGAL project at 7 m. Point source detection is complete to a limiting flux of about 10 mJy. There is generally good agreement between the observed source counts and that predicted by the SKY 5 multiwavelength Galactic struc- ture model. However, some discrepancies were found at certain Galactic longitudes, particularly near the Galactic center. Indi- cations of the nature of the excess sources are inferred from the colour histograms.