4 smithsonian miscellaneous collections vol. i05 



Temperature. 



A new type of screen was installed when the station was moved 

 to Stack Laboratory. The screen formerly used at Gordon 

 College and the new screen were compared side by side at 

 Stack Laboratory for i year. The differences of the monthly 

 values of mean temperature in the two types of screen varied 

 from 0.0 in winter to 0.2° C. in summer. No corrections for 

 change of screen have therefore been applied. 



Throughout 1933 observations were made simultaneously at 

 Gordon College and Stack Laboratory. The site at Stack 

 Laboratory was found to be warmer than that at Gordon 

 College, when due allowance had been made for the types 

 of screen, by the following amounts: 



°c. 



These amounts have not been applied, but should be applied as 

 from January 1933 with the signs changed, if the mean 

 values published are to be treated as strictly comparable. 



Hours: The values are the means of the observations at 8'', 14'', 

 and 20'', and of the minimum temperature, reduced to true 

 means by applying the corrections formerly used, namely : 



BECHUANALAND PROTECTORATE 



MAYALAPYE 



Authority. 



A. H. Wallis, F. R. Met. Soc, Civil Service Club, Cape Town. 



EAST AFRICA 

 ZANZIBAR (CHUKWANI) 



Authority. 



British East African Meteorological Service, A. Walter, Director, 

 Nairobi, Kenya. 



General Note. 



A new meteorological observatory was opened at Chukwani 

 Palace, some 7 miles from Zanzibar Town, in August 1930, 

 the site being quite a good one near the sea. The old mete- 

 orological station in Zanzibar Town was at the top of a 

 substantial old building in the center of the town, and the 

 readings of the two, both as regards temperature and rain- 



