The wording of requirement 1 was changed to that shown below on January 1, 2005.
(A Boy who has earned the Arrow of Light or completed the 5th grade must ALSO be at least 10 years old before he can join a Boy Scout Troop.)
The wording of requirement 7 was changed on January 1, 2013, by changing "Law" to "Scout Law"
Note that the Scout badge is NOT considered a "Rank" by BSA.
The Charter and Bylaws in Article X, Section 1, Clause 6, states
"Ranks. There shall be the following ranks in Boy Scouting: Tenderfoot, Second Class, First Class, Star, Life, and Eagle. The requirements shall be those authorized by the Executive Board and set forth in official Scouting publications. Eagle Palms may also be awarded on the basis of requirements authorized by the Executive Board and set forth in official Scouting publications."
The "Boy Scout Application" mentioned in item 2 is the "BOY SCOUTS OF AMERICA YOUTH APPLICATION" (524-406A). The instructions on that form reference a "personal health history, No. 521-006", which used to appear on the back of the last page of the application form, and has apparently been discontinued. As a substitute, use parts A & B of the Annual Health and Medical Record (680-001) for the health history. Copies of these forms can be downloaded from BSA using the links below.