I'. J). HA UN. 



Another outconu' of llalm's enero\' is the South African 

 School of AHnes and 'rechnolo^g^y at Johannesburg. In the 

 South African College Un'tou Annual for Decemlver i6th. 1890, h.e 

 wrote a len.s^thy^ article uro^in,e^ the establishment of a School of 

 Mines in South Africa, and setting' forth in detail the value of 

 such an institution for the country. .Some three years earlier 

 the Witvvatersrand area had Ijeg-un to be developed, and an 

 increasi'iio- number of a])plicants for instruction in the chemistry 

 0i metallurgy and assayin<j^ had i)resente(l themselves at the 

 South African College. All this while the fact that the mining- 

 industry of South Africa was wholly dependent oii foreign 

 mining engineers was being strongly borne in upon Hahn. With 

 his usual ])ersistency he ]>ressed the need U))on (iovernmeiit and 

 upon all influential persons with whom he caiue into contact, until 

 at length a working scheme was put forward with a course of 

 instruction originally divided between the South .\frican College 

 and two Schools of IVlines. one at Kimberlcv and one at Johan- 

 nesburg. The present South African School of Mines and 

 Technolog}- at b>li^iwie.sburg is the lineal descendant of those. 



Up to this tiiue T'rof. Flahn had been the sole analytical and 

 C(-nsulting chemist in the country, and not only (iovernment 

 chemical work of all kinds, but also that emanating from ])rivate 

 persons, had converged to his lalKM"atory. It was on his recom- 

 mendation that Government chemical laboratories were estab- 

 lished in Capetown, one in the (ieological Surveyor's office and 

 the other in the Agricultural Department; one of Haha's ■|)U])ils. 

 the late Mr. J. C. Watermeyer, was ap])ointed to the charge of 

 the former, and another pupil, Mr. S.B.Morgenrood. to the latter. 

 After a few years the two laboratories were amalgamated under 

 Dr. C. F. Juritz. also a j^upil of Mahn's. while (four years later 

 the chemico-legal and toxicological work which Hahn had until 

 then continued to ]>erform for the (iovernment was likewise 

 taken over by the (iovernment's own la1)<)ratory, which had by 

 that time been thoroughly organized and e(|uippe(l. 



About this pericKl Hahn's ])o])ularity as an extra-mural 

 lecturer on chemistry at the ( lood Hope Seminary (Ciirls' High 

 School) led to an ajyplication on the \rAr{ of two yoimg ladies 

 to be admitted to the College chemistry classes. Quick to 

 recognise this innovation as a step in advance, he moved in the 

 matter in the College Senate, with the result that to-day ladies 

 form a most important section not rtnly of the Chemistry Depart- 

 ment, but of all the College faculties and classes. And now 

 this same i)opularity began to manifest itself in another direction. 

 The old laboratory building became much too small ; classes num- 

 bering often over 100 students each, and sometimes exceeding 

 130, were inconveniently cramped in the lecture theatre and the 

 practical work t>f students ham])ered in the lalx^ratory proper, 

 a-nd so, twenty years after its erection, the building had to be 

 more than doubled in size. Another i)eriod of thirteen years 

 has since passed, and the need of ex})ansion has once again been 

 felt. To provide the re(|uisite accommodation the old College 



