The paraffin method is still the most popular one, and there is little reason to suppose that it will ever become entirely supplanted unless some as yet unknown substance can be found which has all the properties of paraffin except that it does not require heat to transform it to the fluid state and that it is miscible with all solvents. There is scarcely any danger that either the smear or the celloidin method will supersede the paraffin method since both have inherent faults not found in the paraffin method, although it is freely admitted that the paraffin method has its occasional difficulties. The different methods. should, as a matter of The paraffin method is still the most popular one, and there is little reason to suppose that it will ever become entirely supplanted unless some as yet unknown substance can be found which has all the properties of paraffin except that it does not require heat to transform it to the fluid state and that it is miscible with all solvents. There is scarcely any danger that either the smear or the celloidin method will supersede the paraffin method since both have inherent faults not found in the paraffin method, although it is freely admitted that the paraffin method has its occasional difficulties. The different methods. should, as a matter ofThe paraffin method is still the most popular one, and there is little reason to suppose that it will ever become entirely supplanted unless some as yet unknown substance can be found which has all the properties of paraffin except that it does not require heat to transform it to the fluid state and that it is miscible with all solvents. There is scarcely any danger that either the smear or the celloidin method will supersede the paraffin method since both have inherent faults not found in the paraffin method, although it is freely admitted that the paraffin method has its occasional difficulties. The different methods. should, as a matter of