Sentence:  Although Miller noted in 1907 that a difference in the pleural blood supply existed between animals , nowhere in his published works is it found that he did a comparative study of the intrapulmonary features of various mammalian <WSD>lungs</WSD> other than in the dog and cat ( Miller , ' 13 ; ' 25 ) . 
Meaning of the word marked with <WSD> tags:  either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood