Materialize:materialize Icon’s not working


I have simple submit button

      <div className="row">
        <button className="btn waves-effect waves-light btn-block" type="submit" name="action">Submit
          <i className="material-icons right">send</i>

but the icon is not shown up.
it becomes

it should look like in the document

I am using Meteor 1.4


Are you referencing the Material Icons font family somewhere?

<link href="" rel="stylesheet">

See the Usage section of the Materialize docs for more info.


thank you very much.