The theory of vectors and spinors in (9 + 1)-dimensional spacetime is
introduced in a completely octonionic formalism based on an octonionic
representation of the Clifford algebra Cl(9, 1). The general solution
of the classical equations of motion of the CBS superparticle is give
n to all orders of the Grassmann hierarchy. A spinor and a vector are
combined into a 3 x 3 Grassmann, octonionic, Jordan matrix in order to
construct a superspace variable to describe the superparticle. The co
mbined Lorentz and supersymmetry transformations of the fermionic and
bosonic variables are expressed in terms of Jordan products.