Define possession? Discuss various modes of acquisition of possession?

http://books.google.com.pk/books?id=Nu3FnM9MDlgC&pg=PA247&lpg=PA247&dq=Define+possession?+Discuss+various+modes+of+acquisition+of+possession?&source=bl&ots=OD3DuVJ50w&sig=TC_0Bzg5rTTekmWvGEH4IHd92LE&hl=en&sa=X&ei=-WNBT80PibeEB6XDgbMF&ved=0CD4Q6AEwBA#v=onepage&q=Define%20possession%3F%20Discuss%20various%20modes%20of%20acquisition%20of%20possession%3F&f=false