Final answer:
Without specific text from 'The Count of Monte Cristo', it's not possible to determine who Noirtier was staring at with hatred, but it is indicative of his character's deep animosities.
Step-by-step explanation:
Monsieur de Villefort observed his father, Noirtier, staring with savage hatred at an individual not clearly identified in the provided excerpts. The context suggests a deep animosity that Noirtier harbors, potentially because of past events or wrongs that remain unspecified in the texts offered.
However, without additional information from the actual text 'The Count of Monte Cristo' by Alexandre Dumas, to which the question seems to pertain, an accurate and detailed response is not possible. We can assume that Noirtier's fierce glare is a key detail in understanding his character and motivations within the narrative of the novel.
In the story, Monsieur de Villefort observes his father, Noirtier, staring at a person with savage hatred. This person is Caderousse. Caderousse is a former acquaintance of Noirtier who betrayed him in the past. Noirtier's hatred towards Caderousse is a result of the wrongs he has committed against him.