According to Sacca (1956) the three forms of Musca domestics, M. d. domestica, M. d. nebulo and 1k!. d. vicina constitute a cline. Of these only the last two are found in India. They are characterized by having four well defined dark stripes on the thorax but while all stripes are complete in vicina, the two submedian ones are incomplete in nebulo (Figure 1). This offered an opportunity to stud...

In this note, a simple theorem on proportionality of indefinite real quadratic forms is proved, and is used to clarify the proof of the invariance of the interval in special relativity from Einstein’s postulate on the universality of the speed of light; students are often rightfully confused by the incomplete or incorrect proofs given in many texts. The result is illuminated and generalized usi...

Let (X, g) be a compact Riemannian stratified space with simple edge singularity. Thus a neighbourhood of the singular stratum is a bundle of truncated cones over a lower dimensional compact smooth manifold. We calculate the various polynomially weighted de Rham cohomology spaces of X , as well as the associated spaces of harmonic forms. In the unweighted case, this is closely related to recent...

Visual processing and its conscious awareness can be dissociated. To examine the extent of dissociation between ability to read characters or words and to be consciously aware of their forms, reading ability and conscious awareness for characters were examined using a tachistoscope in an alexic patient. A right handed woman with 14 years of education presented with incomplete right hemianopia, ...

Analysis of a riverine species flock 1 ABSTRACT We have discovered surprising undescribed diversity within a clade of mormyrid electric fish in our recent collections from the Ogooué and Ntem River basins of Gabon, Africa. We recognize 38 distinct forms within this group on the basis of unique morphologies and electric organ discharge (EOD) characteristics of which only four clearly correspond ...