diff --git a/google/refine.py b/google/refine.py
index a49c1eb..da710f7 100644
--- a/google/refine.py
+++ b/google/refine.py
@@ -23,6 +23,7 @@ class Facet(object):
     def __init__(self, column, expression='value', omit_blank=False, omit_error=False, select_blank=False, select_error=False, invert=False):
         self.column = column
         self.name = column  # XXX not sure what the difference is yet
+        self.selections = []
         self.expression = expression
         self.invert = invert
         self.omit_blank = omit_blank
@@ -36,13 +37,23 @@ class Facet(object):
             'name': self.column,
             'columnName': self.column,
             'expression': self.expression,
-            'selection': [],    # XXX what is this?
+            'selection': self.selections,
             'omitBlank': self.omit_blank,
             'omitError': self.omit_error,
             'selectBlank': self.select_blank,
             'selectError': self.select_error,
             'invert': self.invert,
         }
+        
+    def include(self, selection):
+        for s in self.selections:
+            if s['v']['v'] == selection:
+                return
+        self.selections.append({'v': {'v': selection, 'l': selection}})
+        
+    def exclude(self, selection):
+        self.selections = [s for s in self.selections if s['v']['v'] != selection]
+    
 
 
 class FacetResponse(object):
@@ -229,6 +240,7 @@ class RowsResponse(object):
             def __init__(self, row_response):
                 self.flagged = row_response['flagged']
                 self.starred = row_response['starred']
+                self.index = row_response['i']
                 self.row = [c['v'] if c else None for c in row_response['cells']]
 
         def __init__(self, rows_response):
@@ -336,6 +348,8 @@ class RefineProject:
         return FacetsResponse(response)
 
     def get_rows(self, engine=None, start=0, limit=10):
-        response = self.do_json('get-rows', {'start': start, 'limit': limit})
+        response = self.do_json('get-rows', {
+            'sorting': "{'criteria': []}", 'engine': self.engine.as_json(),
+            'start': start, 'limit': limit})
         return RowsResponse(response)
 
diff --git a/google/test/test_engine.py b/google/test/test_engine.py
index 71c6075..b37f4ee 100644
--- a/google/test/test_engine.py
+++ b/google/test/test_engine.py
@@ -36,6 +36,15 @@ class FacetTest(unittest.TestCase):
         engine.add_facet(Facet(column='Ethnicity'))
         self.assertEqual(len(engine.facets), 2)
 
+    def test_selections(self):
+        facet = Facet('column name')
+        facet.include('element')
+        self.assertEqual(len(facet.selections), 1)
+        facet.include('element 2')
+        self.assertEqual(len(facet.selections), 2)
+        facet.exclude('element')
+        self.assertEqual(len(facet.selections), 1)        
+        
     def test_facets_response(self):
         response = """{"facets":[{"name":"Party Code","expression":"value","columnName":"Party Code","invert":false,"choices":[{"v":{"v":"D","l":"D"},"c":3700,"s":false},{"v":{"v":"R","l":"R"},"c":1613,"s":false},{"v":{"v":"N","l":"N"},"c":15,"s":false},{"v":{"v":"O","l":"O"},"c":184,"s":false}],"blankChoice":{"s":false,"c":1446}}],"mode":"row-based"}"""
         response = json.loads(response)
diff --git a/google/test/test_refine.py b/google/test/test_refine.py
index 8a69491..3de8580 100644
--- a/google/test/test_refine.py
+++ b/google/test/test_refine.py
@@ -19,6 +19,7 @@ PATH_TO_TEST_DATA = os.path.join('google', 'test', 'data')
 class RefineTestCase(unittest.TestCase):
     project_file = None
     project = None
+    # {1}, {2}
     def setUp(self):
         self.server = RefineServer()
         self.refine = Refine(self.server)
@@ -67,6 +68,7 @@ class TutorialTestFacets(RefineTestCase):
     project_file = 'louisiana-elected-officials.csv'
 
     def test_get_rows(self):
+        # {3}
         response = self.project.get_rows(limit=10)
         self.assertEqual(len(response.rows), 10)
         self.assertEqual(response.limit, 10)
@@ -76,6 +78,7 @@ class TutorialTestFacets(RefineTestCase):
             self.assertFalse(row.starred)
 
     def test_basic_facet(self):
+        # {4}
         facet = Facet(column='Party Code')
         facets = self.project.text_facet(facet)
         pc = facets.facets[0]
@@ -83,14 +86,22 @@ class TutorialTestFacets(RefineTestCase):
         self.assertEqual(pc.choices['D'].count, 3700)
         self.assertEqual(pc.choices['N'].count, 15)
         self.assertEqual(pc.blank_choice.count, 1446)
+        # {5}, {6}
         engine = Engine(facet)
-        engine.add_facet(Facet(column='Ethnicity'))
+        ethnicity_facet = Facet(column='Ethnicity')
+        engine.add_facet(ethnicity_facet)
         self.project.engine = engine
         facets = self.project.text_facet()
         e = facets.facets[1]
         self.assertEqual(e.choices['B'].count, 1255)
         self.assertEqual(e.choices['W'].count, 4469)
-
+        # {7}
+        ethnicity_facet.include('B')
+        facets = self.project.text_facet()
+        response = self.project.get_rows()
+        self.assertEqual(response.filtered, 1255)
+        indexes = [r.index for r in response.rows]
+        self.assertEqual(indexes, [1, 2, 3, 4, 6, 12, 18, 26, 28, 32])
 
 if __name__ == '__main__':
     unittest.main()
\ No newline at end of file