The National Geographic Magazine, Volume 81National Geographic Society, 1942 - Geography Indexes kept up to date with supplements. |
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Page 65
... light reaches down can sea vegetation grow . In the open sea , where water is clear , light penetrates to a depth of 300 feet ; near the coast , where waters are more turbid , light reaches a depth of only about 100 feet . Plants are ...
... light reaches down can sea vegetation grow . In the open sea , where water is clear , light penetrates to a depth of 300 feet ; near the coast , where waters are more turbid , light reaches a depth of only about 100 feet . Plants are ...
Page 136
... light with a luminous halo . The broad Gulf of St. Law- rence was glassy , but there was a strong ground swell . All at once we made out to port first one dim white light and then another . When these two range lights came into line ...
... light with a luminous halo . The broad Gulf of St. Law- rence was glassy , but there was a strong ground swell . All at once we made out to port first one dim white light and then another . When these two range lights came into line ...
Page 679
... light under the photographic negative , it is coated with greasy ink and put under the tap . Water dissolves the coating where light has not struck , but does not affect the light - hardened areas . Plant of A. Hoen and Company ...
... light under the photographic negative , it is coated with greasy ink and put under the tap . Water dissolves the coating where light has not struck , but does not affect the light - hardened areas . Plant of A. Hoen and Company ...
Contents
San Diego Cant Believe It By FREDERICK SIMPICH | 45 |
Sun Shines on San Diego 9 illustrations in color from naturalcolor photographs | 57 |
Avalon Catalina Island 83 color plates II page | 82 |
Copyright | |
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