SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



3500 



4500 



6500 



7500 



5500 

 WAVE LENGTH 



Fig. 3. — Wave-length assimilation curves. A, results obtained with large 

 Christiansen filters and sunlight; B, results obtained with 6-inch Christiansen 

 filters and Mazda lights. Points marked X, the results obtained with the line 

 filters and quartz mercury arc. 



Table i. — Carbon Dioxide Absorption in Different Wave-length Regions 

 (Original uncorrected mean values) 



