Reactions to On the Origin of Species is also right". The "Saturday Review" reported that "The controversy excited by the appearance of Darwin's remarkable work on the "Origin of Species" has passed beyond the bounds of the study and lecture-room into the drawing-room and the public street." The older generation of Darwin's tutors were rather negative, and later in May he told his cousin Fox that "the attacks have been falling thick & heavy on my now case-hardened hide.— Sedgwick & Clarke opened regular battery on me lately at Cambridge Phil. Soc. & dear old Henslow defended me in grand style, saying that my investigations were perfectly
On the Origin of Species miles wide. His explanation was a combination of migration and descent with modification. He went on to say: "On this principle of inheritance with modification, we can understand how it is that sections of genera, whole genera, and even families are confined to the same areas, as is so commonly and notoriously the case." Darwin explained how a volcanic island formed a few hundred miles from a continent might be colonised by a few species from that continent. These species would become modified over time, but would still be related to species found on the continent, and Darwin observed that