ON PlIOTOGRAPHr OF METEOROLOGICAL PHENOMENA. 133 



In all cases promises of future help (in the shape of photographs taken 

 under recorded circumstances) have been solicited, rather than the gift of 

 prints from old negatives. 



The result is that some progress has been made in the organisation 

 of a system of observers who will be on the look-out for interesting 

 phenomena. Such offers already number between forty and fifty, and 

 new names are slowly coming in. Indeed, many of the circulars inviting 

 such aid have been sent to such distant places that replies could hardly be 

 expected yet. However, as it is, the promises in hand include some from 

 Tasmania, Mauritius, Java, Sweden, America, and the Continent, while 

 those from the United Kingdom come from all parts of the country. 



Tour committee view this result with some satisfaction, because a 

 wide distribution and large number of observers multiply the chances of 

 securing records of rare phenomena. It is a case of sowing seed over a 

 large area, and it is only the earlier parts which have yet had time to 

 yield much harvest. 



Photographs Collected. 



The number of prints actually received up to the time of closing this 

 report (July 20, 1891) is not large. The total number, 153, includes 96 

 of clouds, 11 of lightning, 6 of damage by lightning, 2 damage by hail, 3 

 of the positions of meteorological instruments, G of glacier structure, 3 of 

 fog shadows, 8 of hoar-frost, 2 of snow-crystals, and some others. But 

 these can only be regarded as a first instalment of the results of the 

 year's work, and your committee look forward with confidence to a con- 

 siderable increase in their collection during the next few months. 



The details of the collection already made can be best judged by 

 reference to the appended list : — ■ 



First List of Fliotograplis. 

 Class A. — Clouds. 



Nos. 1-6. From the Kew Committee of the Koyal Society. 

 ,, 7-23. From Eear-Aclmiral Maclear. 

 „ 24-26. From Mr. A. E. Western. 

 „ 27-32. From Mr. Arthur Nicols. 

 „ 33-100. From Mr. A. W. Clayden (secretary). 



A considerable number of negatives are also available from which 

 prints have not yet been taken. 



Class B. — Lightning. 



No. 1. Taken on moving plate, from Dr. H. H. HofEert. 



2. Keversed flash, from Mr. A. W. Clayden. 



3. Branched ,, „ ,, 



4. Multiple „ „ „ 

 p. 

 ^' >» j» J) )» 



6. Reversed ,, „ „ 



7. Simple and multiple flashes, from Mr. A. W. Clayden. 



8. Narrow ribbon, from Mr. J. H. Bateman. 



9. from Mr. Ernest Brown. 



10. 



11. „ Mr. Avery. 



