Ledger.prototype.find_all = function(callback) {
  this.collection(function(err, collection) {
    collection.find(function(err, cursor) {
      cursor.toArray(function(err, docs) {
        callback.apply(this,[err,docs]);
      });
    });
  });
};
# Same problems with this write of it
#
Ledger.prototype.find_all = function(callback) {
  this.collection(function(err, collection, client) {
    raise_if(err);
    collection.find(function(err, cursor) {
      raise_if(err);
      docs = []
      cursor.each(function(err, doc) {
      raise_if(err);
        docs[docs.length] = doc
      });
        callback.apply(this,[err,docs]);
        client.close();
    });
  });
};