diff --git a/arbor_src/physics/physics.js b/arbor_src/physics/physics.js
index a3b2d563..b0fe580a 100644
--- a/arbor_src/physics/physics.js
+++ b/arbor_src/physics/physics.js
@@ -317,7 +317,6 @@
         var topleft = null        
         
         $.each(active.particles, function(i, point) {
-
           // move the node to its new position
           if (that.integrator=='euler'){
             point.p = point.p.add(point.v.multiply(timestep));
diff --git a/arbor_src/physics/system.js b/arbor_src/physics/system.js
index 3ce52ee1..5626f0af 100644
--- a/arbor_src/physics/system.js
+++ b/arbor_src/physics/system.js
@@ -102,10 +102,9 @@
           state.names[name] = node
           state.nodes[node._id] = node;
 
-          _changes.push({t:"addNode", id:node._id, m:node.mass, x:x, y:y, f:fixed})
+          _changes.push({t:"addNode", id:node._id, m:node.mass, x:x, y:y, f:fixed});
           that._notify();
           return node;
-
         }
       },
 
@@ -618,4 +617,4 @@
     
     return that
   }
-  
\ No newline at end of file
+  
diff --git a/src/git.js b/src/git.js
index a43012a9..9b9dd410 100644
--- a/src/git.js
+++ b/src/git.js
@@ -33,17 +33,23 @@ GitEngine.prototype.getClosuresForCommand = function(command) {
 var Commit = Backbone.Model.extend({
   initialize: function() {
     // validation / defaults
-    if (!this.get('name')) {
-      this.set('name', _.uniqueId('C'));
+    if (!this.get('id')) {
+      this.set('id', _.uniqueId('C'));
     }
-    if (!this.get('parent') && !this.get('rootCommit')) {
+    if (!this.get('parentCommit') && !this.get('rootCommit')) {
       throw new Error('needs parent commit');
     }
-    // make a node and start drawing? this is a major TODO
-  },
 
-  draw: function() {
+    this.set('node', sys.addNode(this.get('id')));
 
+    if (this.get('rootCommit')) {
+      // TODO
+      // this.get('node').fixed = true;
+      // this.get('node').p = {x: 0, y: 0};
+    } else {
+      var parentNode = this.get('parentCommit').get('node');
+      sys.addEdge(parentNode, this.get('node'));
+    }
   }
 });