Final answer:
Victor sourced materials for his experiments from his well-equipped laboratory, which contained retorts, crucibles, and other apparatus for chemical research and exploration of natural phenomena.
Step-by-step explanation:
Victor was collecting materials for his experiments from various sources as he was deeply involved in the pursuit of scientific knowledge. The extensive laboratory he occupied was equipped with various apparatus including retorts, tubes, cylinders, crucibles, and the tools necessary for chemical research. These materials and tools allowed Victor to delve into a range of experiments, from understanding the secrets of the highest cloud region to investigating the fires of the volcano and the physiology of the human body.