Tarzan Of The Apes

Scanning through my PDA for something new to read I came across the original 'Tarzan Of The Apes' by ERB. I've read numerous books by Philip Jose Farmer which explore the myth of Tarzan (often by giving him a foot long sexual organ and the sex drive to match) but have never read the original.
It's certainly very enjoyable and I can understand why it was such a popular book.
Very dated views of the savagery of the jungle, especially of the nature of giant apes (although his apes were not gorillas or chimpanzees but a giant breed of savage apes) and the inhumanity Congolese natives. I don't think i've read so much praise for the perfection of a human being as I have in this book. The reason for Tarzan's success is put down to his fine noble breeding (although I prefer PJF's further explanation that the breeding is the result of a 30,000 year eugenics programme and Tarzan is one quarter neandertal and the son of jack the ripper).
ERB certainly seems to shy away from any mention of Tarzan's sexual exploits in his book but knowing the nature of most apes (we all know what they're like) and the fact that he rose to be the alpha male of his tribe would seem to indicate to me that Tarzan would have to have gotten up to some rather interesting situations with his brethren that would not have been suitable for a PG book. PJF was certainly offered up a bit more clarity on that particlar issue.
The ending is a contrived but also very unexpected and i'm quite keen on sourcing some of the sequels to see how Tarzan's story continues (it's doubtful Johnny Weismuller's tv series had much to do with the novels if the first one is anything to go by).