The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials

The National Geographic Magazine, an illustrated monthly, the June Number. It includes the following articles: The Effects of Geographic Environment in the Development of Civilization in Primitive Man, by Gardiner G. Hubbard The National Forest Reserves, by Frederick H. Newell George W. Melville Geographic Serials