willis o. brien special effect be still surprisingly good and way ahead of the 1960 version even if he be to perfect them far in king kong ( for which this film feel almost like a dress rehearsal at time ) and give the film an epic scale in the volcanic eruption and stampede sequence and while wallace beery be a perfect choice for professor challenger and embody the gruff and belligerent nature of the character to a tee . there be change to the novel not only be bessie love bring along on the expedition to search for her lose father ( with none of the comic relief chauvinism from challenger find in the 1960 version ) but the pterodactyl that terrify the street of london have be change to a lumbering brontosaurus and which be certainly a change for the good but then doyle book be rather light on plot to begin with . the dinosaur aren not as well integrate into the story a you might hope usually it cutaways to herd of dinosaur in their natural habitat and the racial stereotyping from jules cowles blackface routine a zambo be painfully embarrassing and horribly unfunny ( sample dialogue on see campfire smoke from the plateau represent that mean our folk be still alive . it may mean dat some of those cannibules dat drop dat rock down on u yistiddy be cookin em in dar stew pot . ) . but it hard not to like a film with dialogue like what be you think of and paula in this lost world of ours . or challenger immortal my brontosaurus have escape . keep off the street until i recapture it . and where our hero rival for his girl back home affection be call percy bumberry .