424 sTK.XdCK Ai'in \\i) \Mv'!i w i.A \ ( ;r .\i ,i:s. 



7 (Siuo) illustrates the rrccnli-ioity of the C' in>. mams of 

 IIh- central dialects of South Africa. S ami g the constancy of 

 the coastal dialects. Suto has R for Z-X. F, and T for nD. 



1 beii" ^"' acknowledge, a-- u>ua!. the hel]) of Meinhof. and 

 also the standard works in Kaftir. a^ those of .Mr. .\Kd.aren. 

 Also, in this case, of the great <\steni of I'itman. 



rRA.\S.\C TIO.VS tM' SOCII'-'III'IS. 



St)UTii Ai'KU \N 1 N'STin Ti().\ III' K xt,i m:i:k>. — Satunlax. <)ct(.l)or 13th: 

 (i. M. Clark. M.A.. .\.:\1.I.C.I£.. Presi(knt, in the clinir.— •• The fdctor of 

 safety of 'ivirc ropes used for wiiidin;^ in mine shnfis " : J. .A. Yaughan. 

 Tlie sni)ject wa.s mathematically iiivesii,natc<l l>y xhv aid nf graphic 

 (lia.urarns, and sinipk' funmil;',- ni" -;il\t\ soiiglil. 



.Saturda}. December 8th: (i. M. Ciark. .M..\.. .\.A[. J.C.I'... I'nsideiu. 

 in ilie chair. — " Deseriplioii of Uie ivorks of White's Soiitli .Ifriena 

 Cement Conif^aiiy " : J I. Campbell. The works are situated at Venters- 

 hurg Road. Orange Free Stale. The description included the power plant, 

 laboratory, repair shop, limestone quarry, aeiial ropeway, wet mill, mixer, 

 kiln plant, coal plant, cement mill, and silos. The consumption of water 

 on the works is approximateh 65.(100 gallons per 2\ hours. ol)tained from 

 lin' conii)any's concrete dam at Rict.spruit. 



.Saturday. January- 12th, G. M. (/lark. M.A.. M.l.C.i''., I'resident, in 

 the chair. — "A liquid sheedoiiieter " . W. Alexander. The type of 

 .speedometer described was found to ftvercmu- tlie objections usually 

 attaching to those i:)f the revolving nuiss type. The instrument ctwsists 

 of an imjieller. a casing, an accurate means of measuring liipiid pressure 

 nr hc'.'id. and .-i li(|ni(l reserv(>ir. 



( ;eoi.o(;u .\i. .SuciEiv (IK Sori 'I .\kkic.\. — Tuesday. December iiStii : 

 J. J. Ciarrard. Vice-President, in ilie chair. — " Xote on n remarkable 

 oeeii'-renee of ehroniiitni toiinnaline and rutile in ilie Barberton District '' : 

 A. L. Hall. A \ery peculiar association of green chroniium tourmaline, 

 witli i)ink rutile occurs in the neighliourhood of X'oordkaap. nine miles 

 north of Harlierton : apparently a rock of this mmsnal comliination has 

 not previously been recorded. Tlu' antlior procei-ded tn dc^cribt- in detail 

 the occurrence recorded by him. 



ChK.MIi \I., MlT-M.l.rUCK AI.. A.\|i .VilNIN(i SoCll-m- OK SoCT)! A)-UICA. — • 



Saturday. March 16th: (1. Ilildick Smith, President, in the chair. — " 77/c 

 estimation of injurious dust in mine air hy the A'o/rt- Konimcter" : J. 

 Innes. I he ki>ni'.n(_ter is a simple uiechanical arrangement for causing 

 a known (pianlity of air to impinge at a high velocity through a line nozzle 

 on to the surface of a glass slide thinly coated with vaseline. The spot 

 so formed is pregerved by means of a cover-glass, and the muubcr (^f 

 particles coimted under a n)icroscope by means of a specially ruled glass. 



