516 



Dr. P. 



F. Frankland. 



[June 10, 



3 



■+3 





















)tal number 

 ng per sq. J 

 3er minute 

 alculated) . 



1 



TOT 



OS CO rH 

 O 00 O 

 r-i rH 



HlflMM 

 IflHOO 

 00 <M 00 CO^ 



1 



lO rjt CO CO 



1 



CO O — ' 



co co co 























ft h • 





















[ numbi 

 in 10 lil 

 sulated) 



CO 

 rH 







*; 



00 







oo 



CO 



• 























o d o 

 m 





















! colonies 

 und. 



10 litres 









15 litres 







16 litres 





















.2 





6 



CO 

 rH 



• 













"H 

 CO 







nd frosty. 

 L2.30 p.m. 



ed on W. 





P.M. 

 1 to 1.10. 

 >1.20 to 1.35. 

 1.38 to 1.58. 

 1.40 to 1.50. 





p 



od 



k to 

 4.45 „ 





Continuous rain previous day until morning 

 of experiment ; ground and surroundings 

 thoroughly wet. Wind E., fairly strong. 

 Tube pointed N.W. 4.12 p.m. Temp. 12° C. 





Wind N.W., moderate, ground dry a 

 Tube pointed S.W. 11.50 a.m. to : 

 Temp. 3° C. 



o 



p 



^ 





'% 







Conditions of experimer 



Four dishes were simultaneously e^ 



(windward) parapet. 



Wind S.W. by W., intermittent"" 

 and variable. Sun shining 

 greater part of time ; ground 

 wet. Wind increased consider- 

 ably at 1.45 p.m. Temp. 12-5° j 

 to 11° C. . 





Heavy shower since previous expe 

 ment. Wind S.W., strong, falli 

 later. Temp. 8° to 9° C. 



Ditto. 











oT 















"o 







'o 













Place. 



Roof of Science Sch< 

 loth March, 1886. 



Ditto 





Roof of Science Sch( 

 31st March, 1886. 





c 

 P 





Ditto 



Roof of Science Sch( 

 12th May, 1886. 



