Jut saw this while browsing. The description says the air intake happens through his nose when the cap is shut. A very intereting pipe.
. http://www.ebay.com/itm/Rare-American-Civil-War-Soldier-Carved-Briar-Smokers-Pipe-Antique-19th-century-/350904994916?pt=UK_Collectables_Tobacciana_Smoking_LE&hash=item51b3914c64
. http://www.ebay.com/itm/Rare-American-Civil-War-Soldier-Carved-Briar-Smokers-Pipe-Antique-19th-century-/350904994916?pt=UK_Collectables_Tobacciana_Smoking_LE&hash=item51b3914c64