\ 
B. S. 16202 - Blowing a channel through 
the marsh with dynamite. Mouth of Bear 
River, Utah. 
June 25, 1915» 
B.S. 16204 - Dissection of Erismatura .jamaicensis 6 
adult. Under the neck may be seen an inflated air-sac. 
This communicates with the trachea immediately behind the 
laryngeal chamber, and lies between trachea and oesophagus. 
It has no connection with the pulmonary air-sac series. 
Duckville Laboratory. Mouth of Bear River, Utah. 
June 27, 1915* 
