1^24 Instructions for Making mid Registering 



read off on the respective scales of each instrument, on nn 

 account applving to. them previous to entry any sort of covrec- 

 licn, as for instance for zero, for tempp.rat,ure, capi'.iaritv, etc. 

 All these and the like corrections, being matter of calcilatiou 

 and reasoning from other observations, are to be reserved till 

 the final discussion of the series, and for separate determination 

 and statement. 



6. If copies be taken of the register?, they should be carefully 

 compared with tlie oriujnals by two persons, one readina; aloud 

 from the original and the otlier attendins; to the copy, and then 

 excliann-jnc: parts, a process always advisable wherever great 

 masses of fioiires arc required to be corn-ctlv copied. 



6. A copy so verified, or the original, (the latter being pre- 

 ferred) should be transmitted regularly (if possible monihhi 

 from places within the limits of the colony) to the Secretary of 

 the South African Literary and Philosophical Society, at Capo 

 Town, which in>tilution on its part will take care that such 

 documents shall not merely be treasured as a dead letter in its 

 archives, but shall be rendered available towards the improve- 

 ment of Metcorolosical knowledge, to the full extent of their 

 actual scientific value. 



7- The register of every instrument should be kept in parts 

 of its own scale, as read off, no reduction of Foi'eign measures 

 or degrees to British being made — but it should of cousse be 

 stated what scale is used in each instrument. 



II. Of the Times of Ohservation and Registry. 



Meteorological observations should be made and registered 

 daily, at stated and regular hours. In fixing on these, some 

 sacrifice of system must of necessity be made to the convenience 

 and habits of the observer. The best hours in a scientific point 

 of view would he those of Sun-rise, Noon. Sun-se(:,.and Mid- 

 night, and these are the hours for which the registers are kept 

 at'the Royal Observatory. But these are not the hours adapted 

 to general habits, and since the midnight observation is likely 

 to be pretty generally neglected elsewhere than in an Astrono- 

 mical Observatory, the following hours, for a division of the 

 day into three parts, are proposed for what may be deemed the 

 Morning, Afternoon, and Evening observations, viz. 



Morning, - 8 x. r.i. 



Afternoon, - 2 r. m. 



Evening, - S p. m. 



If however the habits or engagements of any one should not 



allo-.v him to conform to these hours, rather than not observe 



he may select his own, specifying only vv'hat they are at the 



head of every pag^e of his register, and adhering steadily to 



