44 BUST AND MILDEW IN INDIA. 



Outturn poor, the same as in the previous year, due probably more 

 to the direct effect of weather on the host than to the presence of 

 the parasite. 



1880. Humidity deficient in January, but excessive in Feb- 

 ruary and March ; cloud excessive in February, but deficient in all 

 the remaining months ; rain generally deficient. Conditions fairly 

 favourable to the host, but unfavourable to the fungus. Outturn 

 rose, but slightly. 



1881. Humidity on the whole excessive, especially in March 

 and April ; cloud also excessive, except in January, when it was 

 markedly deficient; rain deficient, except in March. Conditions 

 favourable alike to host and parasite ; in the case of the latter, 

 especially, the combination of cloud and rain in March. Outturn 

 very slightly greater than in the previous year; the fungus was 

 very probably repressive. 



1882. Humidity deficient, except in January ; cloud excessive 

 in January, but deficient in February and March, and normal in 

 April ; rain about normal in January, deficient in the next three 

 months. Conditions unfavourable to both host and parasite. Out- 

 turn fell very slightly, to the level of 1880 and 1877. 



1883. Humidity on the whole deficient; cloud excessive in 

 January and March, but deficient in February and April ; rain 

 deficient, except in March, when it was normal. Conditions 

 somewhat unfavourable to the host, but the condition in March 

 favourable to the fungus. Outturn remained the same as in the 

 previous year. 



1884. Humidity excessive in January, normal in February, 

 deficient in March and April, especially in March ; cloud on the 

 whole deficient in January to March ; rain deficient throughout. 

 Conditions unfavourable to both host and parasite, but especially 

 to the latter. Outturn rose very slightly. 



1885. Humidity excessive in January and February, and 

 normal in March ; cloud very excessive in January, deficient in 

 February, and excessive thereafter ; rain excessive in January, 

 normal in February, and deficient in March and April. Conditions 

 favourable to the host, but on the whole not favourable to the 

 fungus. Outturn rose. 



1886. Humidity and cloud excessive in January and March, 

 and normal in February ; rain excessive in January and March, 

 and deficient in February. Conditions favourable to the host, and 

 very favourable to the fungus. Outturn fell ; a good instance of 

 the repressive influence of the parasite. 



1887. Humidity and cloud excessive in January, but deficient 

 in February and March ; rain the same. Conditions unfavourable 

 to both, especially to the fungus. Outturn fell still lower. 



1888. Humidity excessive in January and February, especially 

 the latter month, but deficient thereafter ; cloud about normal in 

 January and February, and deficient thereafter ; rain excessive in 

 January, and deficient thereafter. Conditions in January favourable 

 to the parasite. Outturn much the same as in the previous year. 



In reviewing these results, it appears to me that in the Central 



