Gibbs (1889, p. 140): $ \qquad \dfrac{d\,\log\mathrm V}{d\,\log p} = - \dfrac{d\,\log n}{d\,\log\lambda} $
Gauss (1876, p. 401): $ \qquad \dfrac{\mathrm{d\,d}\,P}{(\mathrm{d}\log\eta)^2}= \dfrac{\mathrm d\,P}{\mathrm d\log y} $
Jacobi (1841, p. 336): $ \qquad \dfrac{\partial R}{\partial a}= \sum\cdot \dfrac{\partial R}{\partial \frac{\partial f_i}{\partial x_k}}\cdot\dfrac{\partial^2 f_i}{\partial a\,\partial x_k} $
Legendre (1826, p. 466): $ \quad \dfrac{d\,l\,\Gamma a}{da} + \dfrac{d\,l\,\Gamma(\frac12+ a)}{d(\frac12+ a)} - \dfrac{2d\,l\,\Gamma(2a)}{d(2a)} = -2l\,2 $
L’Huilier (1795, p. 96): $ \qquad \dfrac{d.a^{\mathrm z}}{d.\log.z}= A.a^{\mathrm z}$