A person was brought by police from the railway platform. He is talking irrelevant. He is having a dry mouth with hot skin, dilated pupils, staggering gait and slurred speech. The most probable diagnosis is -
Alcohol intoxication
Carbamates poisoning
Organophosphorus poisoning
Datura poisoning
The patient in question has

(i) Muttering delirium (talking irrelevant), 
(ii) Dry mouth, 
(iii) Hot skin and 
(iv) Dilated pupil. 
Diagnosis is datura poisoning.