CALIFORNIA. CITRUS CULTURE. 15 
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Fic. 2.—The square system. 
(After Lelong.) 
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Fic. 3.—The triangular or alternate 
system. (After Lelong.) 
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Fic. 4.—The quincunx system, 
(After Lelong.) 
Fic. 5.—The hexagonal system. 
(After Lelong.) 
