diff --git a/recipes/economist.recipe b/recipes/economist.recipe
index fa0ee0721c..e46a074f3a 100644
--- a/recipes/economist.recipe
+++ b/recipes/economist.recipe
@@ -114,7 +114,9 @@ class Economist(BasicNewsRecipe):
                             'description':'', 'date':''})
 
             if articles:
-                feeds[section_title] = articles
+                if section_title not in feeds:
+                    feeds[section_title] = []
+                feeds[section_title] += articles
 
         ans = [(key, val) for key, val in feeds.iteritems()]
         if not ans:
diff --git a/src/calibre/ebooks/mobi/tbs_periodicals.rst b/src/calibre/ebooks/mobi/tbs_periodicals.rst
index 2fa6ec90f3..c2f4edc2ab 100644
--- a/src/calibre/ebooks/mobi/tbs_periodicals.rst
+++ b/src/calibre/ebooks/mobi/tbs_periodicals.rst
@@ -13,9 +13,9 @@ First sequences:
 0b0110 : 80 2
 0b0111 : 80 2 80
 
-Other sequences:
-0b0101 : 4 1a
-0b0001 : c b1
+0b0001 = 0
+0b0010 = 0
+0b0100 = 2
 
 Opening record
 ----------------