. Carnegie Institution of Washington publication. 96 VITALITY AND EFFICIENCY WITH RESTRICTED DIET. RESPIRATION CHAMBER. Personal visits to Stockholm and Helsingfors and inspection of both the Scandinavian chambers led to material modification in the design for the chamber built in the Nutrition Laboratory. Thus it was seen that the height could easily be reduced. Second, the entrance to the chamber was best made from the top; fortunately the unusually high ceiling of the calorimeter laboratory made this change possible without difficulty. The calorimeter laboratory is provided with excellent a
. Carnegie Institution of Washington publication. 96 VITALITY AND EFFICIENCY WITH RESTRICTED DIET. RESPIRATION CHAMBER. Personal visits to Stockholm and Helsingfors and inspection of both the Scandinavian chambers led to material modification in the design for the chamber built in the Nutrition Laboratory. Thus it was seen that the height could easily be reduced. Second, the entrance to the chamber was best made from the top; fortunately the unusually high ceiling of the calorimeter laboratory made this change possible without difficulty. The calorimeter laboratory is provided with excellent auto- matic heating and cooling arrangements for maintaining uniform tem- perature. Hence no special appliances for heating the new respiration chamber were needed. As a matter of fact, it was found subsequently that cooling rather than heating was absolutely Fig. 6.—^View of east end of group respiration chamber. a, Inner wooden floor; 61 and bi, windows; c, suspension-rod supporting roof of chamber; d, step- ladder; e, hook for supporting ladder d when not in use; /, trap-door resting in groove gg when closed; hh, brine coil; k, rotary air impeller; b, opening into chamber for ingoing air; m, Bun- sen burner for heating ingoing air; n, butterfly valve. The details of construction of the respiration chamber are given in figures 6 and 7. Figure 6 shows the window (east) end of the chamber. A cross-section of the chamber in the longest dimension from west to east is represented in figure 7. The respiration chamber has an inner lining of sheet metal, which is absolutely air-tight. As this inner fining required a substantial wooden backing to prevent unnecessary wear or play by the buckling of the sheet metal, a framework was built on the floor of the calorimeter room. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble t
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