92 GENERAL HISTORY OF INFUSOETAL ANIMALCTTIE8. 



North America; Synedra entomon from Chili. The last occurs in 

 Africa and Asia, but none were peculiar to Africa. 



Other facts of storms of dust are recorded by Elii-enberg. Eed 

 haU was observed by Humboldt in Paramo, between Bogota and 

 Papayan, at a height of 14,700 feet. 



On October 14, 1755, at LacarnQ, near Lago Maggiora. At 10 

 IMfy o'clock in the morning a red mist filled the air, and at 4 o'clock in 

 the afternoon there was a blood-rain, which left a red deposit cover- 

 ing 40 square German miles. At the same time a reddish snow fell 

 upon the Alps. It is calculated that each English square mile 

 received a deposit of 2700 cubic feet. 



In 1623 blood-rain fell at Strasburgh, and in 1222 a similar event 

 happened at Rome. Ehrenberg records 340 showers of blood-rain 

 and dust-rain — 8 1 before Christ, commencing with the time of Moses 

 in Egypt, and 259 after. (See Edin. Phil. Joui\ 1852.) 



NoTici. — The reader is refeiTcd to the appendix, for Professor 

 Ehrenberg' s reply to the observations of natui-alists opposed to his 

 views, of the animal natui'e of the doubtful Infusoria, 



End of Part I. 



