The Coccidae of South Africa-II

The Effect of South African Geopolitical Position in the Development of Cinema in South Africa

This paper will discuss about the role of the geopolitical location of South Africa in the development of movie and the cinema industry in this country. Despite of bringing ci-nema to South Africa by white Europeans, but the development of this phenomenon is mostly due to the geopolitical position of this country. It is interesting to know that ci-nema reached Africa in much the same time as it...

Pillar Design in the Hard Rock Mines of South Africa

This paper gives an overview of the difficulties associated with the design of hard rock pillars in South African mines. Recent examples of large scale pillar collapses in South Africa suggest that these were caused by weak partings which traversed the pillars. Currently two different methods are used to determine the strength of pillars, namely, empirical equations derived from back analyses o...

Variation of ionospheric slab thickness over South Africa

Ionospheric slab thickness is defined as the ratio of TEC to maximum electron density of the F-region (NmF2), proportional to the square of the F2-layer critical frequency (foF2). It is an important parameter in that it is linearly correlated with scale height of the ionosphere, which is related to electron density profile. It also reflects variation of the neutral temperature. Therefore, ionos...

The Snakes of South Africa

correcting many of the popular misconceptions concerning snakes and snake-poisoning. The first half of the work gives a systematic account of the various species found in South Africa, and includes many interesting observations on their habits. The author has also included a series of 'keys' for the identification of the different genera and species; these have been compiled by no less an autho...

The question of South Africa.