working. The Prism EFG must be no bigger than is necessary, and its back
side FG must not be quick-silver'd over. For without quicksilver it will
reflect all the Light incident on it from the Speculum.

[Illustration: FIG. 29.]

In this Instrument the Object will be inverted, but may be erected by
making the square sides FF and EG of the Prism EFG not plane but

						Gateway:    "http://abcd/efg",
						System:     "test-system",
						VolumeName: "test-vol-1",
					},
				},
			},
		}, {
			name: "ScaleIO with empty name",
			vol: core.Volume{
				Name: "scaleio-volume",
				VolumeSource: core.VolumeSource{
					ScaleIO: &core.ScaleIOVolumeSource{
						Gateway:    "http://abcd/efg",
						System:     "test-system",