give me a link to that cite
http://books.google.com/books?id=InEDAAAAQAAJ&dq=It%20is%20an%20established%20maxim%20that%20birth%20is%20a%20criterion%20of%20allegiance.%20Birth%20however%20derives%20its%20force%20sometimes%20from%20place%20and%20sometimes%20from%20parentage&client=firefox-a&pg=RA1-PA33&ci=38,201,790,196&source=bookclip#v=onepage&q=It%20is%20an%20established%20maxim%20that%20birth%20is%20a%20criterion%20of%20allegiance.%20Birth%20however%20derives%20its%20force%20sometimes%20from%20place%20and%20sometimes%20from%20parentage&f=false