This paper discusses a recent puzzle concerning the notions of boundary parthood and dependence, and offers a new solution. The puzzle was originally presented by Jeroen Smid and successively elaborated upon by Claudio Calosi. I first reformulate some of the troublesome premises. Particularly, whereas Smid and Calosi discuss the puzzle in terms of an underspecified notion of dependence, I propose to construe it in terms of the notion of grounding. In this manner, the dependence relation inherently carries an asymmetry, and (...) we can effectively utilize its four places. The solution I advance precisely takes advantage of this feature of dependence. My proposal avoids the contradiction while still respecting the intuitions driving the original premises. It is also fully compatible with boundaries being only generically dependent on their wholes. (shrink)

Late Lowe’s metaphysics of material objects is an interesting multi-thingist theory that still attracts interest from various authors. The core idea is that ifxmaterially constitutesy, thexis a proper part ofy. I discuss some mereological issues that arise from the approach and propose a revision of the mereology associated. Particularly, I examine the tenability of a number of supplementation principles and conclude that just one may serve the theory adequately. Still, the endorsement of such a principle does not come for free. (...) Successively, I address the derivability of an important extensionality theorem and conclude that the theorem must be taken as an axiom in the mereology at stake. Lastly, I discuss two notable definitions of mereological fusions to assess which one best suits the present theory. The result is that authors sharing Lowe’s multi-thingist conception of material objects can still enjoy a moderately strong mereology. (shrink)

Kathrin Koslicki is one of the leading authors of mereological hylomorphism, a non-reductive theory that construes material objects as mereological fusions of matter and form. Accordingly, Michelangelo’s David has both a portion of marble and David’s individual form as proper parts. I individuate two kinds of dependence that play an important role in characterising Koslicki’s brand of hylomorphism. First, forms depend for their existence on the compounds of which they are parts. Second, hylomorphic compounds depend for their identity on their (...) forms. The existential dependence of forms on their compounds ensures forms cannot float free of material objects, whereas the identity dependence of material objects on their forms grants forms play a non-trivial role in determining the nature of their compounds. The main goal of the present paper is to argue that these two claims of dependence lead to a contradiction when conjoined with some further weak principles concerning parthood and grounding. I then briefly illustrate which are the theoretical commitments that Koslicki may arguably relax to avoid the impasse. In the end, though, her brand of hylomorphism will be in a worse dialectical position. (shrink)

Some philosophers of biology state that the metaphysical status of biological species is context determined by the use different branches of biology make of their corresponding proper names, so that one and the same biological species can be both an individual and a natural kind. In this paper, I aim to undermine the idea, often associated with the present thesis, according to which the debate about the metaphysical status of biological species should be deflated, since it would be possible to (...) translate every sentence from natural-kind talk to individual-talk and vice versa. I offer a charitable interpretation of the principle grounding such an idea and show how it is in tension with independent theoretical biological notions. (shrink)