INCREASE OF THE AMERICAN GOOSEBERRY-MILDEW. 597 



there ; in our gardens there are more than one hundred attacked. We 

 have had no communication with the gardens at Whitehall, Ballymena, 

 nor with America." Specimens (now in the Kew Herbarium) of the fungus 

 were also sent, and proved to belong to S. mors-uvce. Another closely- 

 allied mildew, Microsphara GrossularicB (Wallr.) Lev., occurred side by 

 side on the same shoots with the Sph&rotheca. 



In August last, also, I received further specimens from Mr. F. W. 

 Moore, A.L.S., of the Royal Botanic Gardens, Glasnevin, Dublin, of the 

 American Gooseberry-mildew, which had been sent to him from a garden 

 near Antrim, with the following report : — "I send a few Gooseberries 

 .showing a blight which has appeared this season both on my own crop 

 and on that of others. The disease in my case began on one tree and 

 has rapidly spread to several. I have not before noticed it, although I 

 have been growing a considerable area for some years past. There 

 was a report last year of a disease having appeared on Gooseberries at 

 Broghahan, Co. Antrim, and probably this is the same." The owner of 

 the garden supplied me with the following additional information : — " It 

 was not until I began to pick this season that I noticed that the berries 

 on some three or four trees were still small and green, with the blight 

 showing on some of the branches. The variety affected was ' Crown Bob,' 

 and these with ' Whinham's Industry ' are the only kinds grown. The 

 disease appears to be pretty general now, both in Co. Antrim and Co. 

 Derry, but so far as I can learn has not appeared in Co. Armagh, which 

 is the chief fruit-growing centre in Ireland." 



In April of the present year Dr. Hennings, in a communication to 

 Gartenflora [Bibl. (1)], stated that S. mors-uvce had appeared in Russia 

 during the season of 1901. The examples were sent to Dr. Hennings by 

 Mr, N. A. Mossolow, from some private gardens at Michailowskoje, 

 district of Moscow, where it occurred, causing an epidemic, on the 

 cultivated Gooseberries. The berries were completely covered over with 

 the rusty-brown mycelium of the fungus, which by July 8, 1901, showed 

 perithecia containing ripe spores. Dr. Hennings states it as his opinion 

 that the fungus is without doubt to be considered as a true native of 

 Russia. 



Mr. N. A. Mossolow has kindly supplied me with the following 

 additional information on the subject of this outbreak of the disease in 

 Russia : — " The Gooseberries which became infected were planted several 

 years ago, and were originally bought in St. Petersburg and in Riga. 

 Several different varieties of Gooseberries were attacked. The summer of 

 1901, when the fungus first appeared here, was very hot and dry. We 

 found the fungus, in very great quantity, only on the fruit of the Goose- 

 berries and not on the branches. The fruit-garden is surrounded by the 

 park and wcods on one side ; on the other there is a hedge of Crataegus. 

 The fruit-garden consists of Apple-trees, Cherries, Raspberries, Straw- 

 berries, Currants, and a few hardy plants, Bubus ccesius, &c." 



Prof. A. de Jaczewsky (Inspector of Vegetable Pathology to the 

 Russian Minister of Agriculture), to whom I applied for information as 

 to whether S. mors-uvce had been reported from other districts of Russia, 

 wrote as follows : — "I do not know of any other place than Michailow- 

 skoje where the fungus has been found in Russia ; in all other cases the 



