Putnam gives a more elaborate account of the reference of natural kind terms, which apparently does not depend on treating kinds as abstract individuals.
The conclusions of the arguments given above include not only the falsity of descriptivism as a thesis about the reference of natural kind terms, but also the more general truth of semantic externalism.
The majority of references on natural geysers indicate that a chamber connected to the surface by a narrow channel or channels is essential to produce the intermittent discharge that is characteristic of geysers.
However, they are not easily amenable to numerical calculation and there are no reference standards of natural frequencies and modes available for use in engineering.
The reason for a thickness increase can be understood through reference to principles of natural selection via predation without need to reference or understand the biomolecular properties of the exterior shells.
The moral is: the reference of a natural kind term cannot be determined solely by what's 'in the head'.
Raman spectra acquired from the yellow pigments in the prints belonging to Set A displayed sharp, distinct peaks at 66, 105, 136, 154, 179, 202, 291, 310, 354, and 381 cm−1 (Fig. 2), which agreed well with reference Raman spectra of natural orpiment [22, 23].
A common misconception is that any animal or plant considered to be outside the realm of our reference for "natural" is a GMO.
Zabarella states that Aristotle's philosophy of nature may be perfect in structure and form, but it is incomplete in terms of its reference to natural beings.
These findings provide support to the climate adaptation theory and can serve as reference for the design of natural ventilated buildings.
