Full Idea
There is no suggestion in Boyle that secondary qualities are, unlike primary qualities, somehow illusory, subjective or 'in the mind'.
Gist of Idea
Boyle's secondary qualities are not illusory, or 'in the mind'
Source
report of Robert Boyle (The Origin of Forms and Qualities [1666]) by Peter Alexander - Ideas, Qualities and Corpuscles 03.3
Book Reference
Alexander,Peter: 'Ideas, Qualities and Corpuscles' [CUP 1985], p.71
A Reaction
[Alexander goes on to say that his also applied to Locke]