 The interior plan of the church consists of a nave , a short transept , and a semicircular apse . At the west end of the nave is a narthex . At the center of this is a vestibule leading to the church 's main entrance ; at the church 's northwest corner is a reconciliation room , formerly a baptistry ; at the southwest corner is a short passage from which a staircase descends to the basement and another rises to the choir loft . In the loft is the church 's organ , a tracker model manufactured by the Hinners Organ Company in 1879 ; the organ was not originally built for St. Leonard 's . 
 The interior plan of the church <a href='uninflect' title='1'><mark>consists</mark></a> of a nave , a short transept , and a semicircular apse . At the west end of the nave <a href='drop_aux' title='2'><mark>is</mark></a>a narthex . At the center of this is a vestibule leading to the church <a href='null_genetive' title='3'><mark>'s</mark></a>main entrance ; at the church <a href='null_genetive' title='4'><mark>'s</mark></a>northwest corner is a reconciliation room , formerly a baptistry ; at the southwest corner is a short passage from which a staircase <a href='uninflect' title='5'><mark>descends</mark></a> to the basement and another <a href='uninflect' title='6'><mark>rises</mark></a> to the choir loft . In the loft is the church <a href='null_genetive' title='7'><mark>'s</mark></a>organ , a tracker model manufactured by the Hinners Organ Company in 1879 ; the organ was not originally built for St. Leonard <a href='null_genetive' title='8'><mark>'s</mark></a>. 
Da interior plan of the church consist of a nave , a short transept , and a semicircular apse . At the west end of tdanave a narthex . At the center of this is a vestibule leading to the church  main entrance ; at the church  northwest corner is a reconciliation room , formerly a baptistry ; at the southwest corner is a short passage from which a staircase descend to the basement and anotha rise to the choir loft . In the loft is thdahurch  organ , a tracker model manufactured by the Hinners Organ Company in 1879 ; thedagan was not originally built fir St. Leonard  .