( ( ( ( ( He ( ( ( ( dissected ( ( the eyes ) ( of animals ) ) ) , ) and ) ( discovering ( ( ( ( three layers ) ( -LRB- ( not ( two -RRB- ) ) ) ) , ) ( ( ( found ( that ( ( the fluid ) ( ( was ( of ( a ( constant consistency ) ) ) ) ( with ( ( the lens ) forming ) ) ) ) ) ) ( -LRB- ( or ( congealing -RRB- ) ) ) ) ( after death ) ) ) ) ) ) , ) and ) ( ( the ( surrounding layers ) ) ( were ( seen ( to ( be juxtaposed ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP He)) (VP (VP (VBG dissected) (NP (NP (DT the) (NNS eyes)) (PP (IN of) (NP (NNS animals))))) (, ,) (CC and) (VP (VBG discovering) (NP (NP (NP (CD three) (NNS layers)) (PRN (-LRB- -LRB-) (RB not) (NP (CD two)) (-RRB- -RRB-))) (, ,) (VP (VP (VBN found) (SBAR (IN that) (S (NP (DT the) (NN fluid)) (VP (VBD was) (PP (IN of) (NP (DT a) (JJ constant) (NN consistency))) (PP (IN with) (NP (NP (DT the) (NN lens)) (VP (VBG forming)))))))) (PRN (-LRB- -LRB-) (CC or) (VP (VBG congealing)) (-RRB- -RRB-)) (PP (IN after) (NP (NN death)))))))) (, ,) (CC and) (S (NP (DT the) (VBG surrounding) (NNS layers)) (VP (VBD were) (VP (VBN seen) (S (VP (TO to) (VP (VB be) (VP (VBN juxtaposed)))))))) (. .)))
He dissected the eyes of animals, and discovering three layers (not two), found that the fluid was of a constant consistency with the lens forming (or congealing) after death, and the surrounding layers were seen to be juxtaposed.
(ROOT (S (NP (NP (DT The) (NN pleura)) (SBAR (WHNP (WDT that)) (S (VP (VBZ surrounds) (NP (DT the) (NNS lungs)))))) (VP (VBZ consists) (PP (IN of) (NP (CD two) (NNS layers)))) (. .)))