Sliding panel commanding a view of a string one-eighth of an atmosphere: Name of Machines. Maximum. Minimum. Holmes 1,523 1,523 Alliance 1,953 1,953 Gramme (No. 1). 6,663 4,016 Gramme (No. 2). 6,663 4,016 Siemens (Large) 14,818 8,932 Siemens (Small, No. 1) 5,539 3,339 Siemens (Small, No. 2) 6,864 4,138 Two Holmes's coupled 2,811 2,811 Two Gramme's (Nos. 1 and 2) 14,134 8,520 [Footnote: Observations from the dark. I have not received written confirmation of.