Page:Popular Science Monthly Volume 88.djvu/268

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��Popular Science Monthly

���Mammato-cumulus clouds

��Cumulus mammatus clouds

��Lenticular clouds

��Cumuli with cirri-form appendages

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���Alto-stratus clouds

����Cumulus, passing into strato-cumulus

���A nondescript form of alto-cumulus

��Nimbus (rain-cloud)

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