Invoking methods on WCF Service in ServiceReferences instead of WCF Service in project

Using VS 2008, .NET 3.5:
From client javascript I can invoke methods defined in WCF services (.svc) defined in the .NET project (EmployeeServices and BusinessObjects below), but can't find a means of invoking methods on a WCF service that was added as a Service Reference to the project.
The ScriptManager tag in the client looks like this:
 
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="EmployeeServices.svc" />
<asp:ServiceReference Path="BusinessObjects.svc" />
<asp:ServiceReference Path="http://localhost/OtherProject/SomeService.svc" />
</Services>
</asp:ScriptManager>
 
What would give the SomeService WCF service visibility in my client script?  I can't see any missing attributes inside the service file.
Currentl ...