The principal parts of the instrument have now been described, and there remain only the pegs, blocks, strings, and tail-piece, the sum of which makes up the number of fifty-eight constituent parts as before mentioned. There is still, however, one item of the construction to be mentioned which does not form a separate portion of the Violin, but which is certainly worthy of notice, viz., the button, which is that small piece of wood against which the heel of the neck rests. The difficulty of making this apparently insignificant piece can only be understood by those who have gone through the various stages of Violin manufacture. The amount of finish given to the button affects in a great measure the whole instrument, and if there is any defect of style it is sure to be apparent here. It is a prominent feature, and the eye naturally rests upon it: as the key-stone to the arch, so is the button to the Violin. The sound-holes, or _f_-holes, it is almost needless to remark, are features of vital importance. Upon the form given to them, and the manner of cutting them, largely depend the volume and quality of tone. The Italian makers of Brescia and Cremona appear to have been aware of the singular influence the formation of the sound-hole has upon the production and quality of sound. The variety of original shapes they gave to them is evidence of their knowledge. Appearance in keeping with the outline of their design may have influenced them in some measure, but not entirely. Most makers used patterns from which to cut their sound-holes; Joseph Guarneri and some others appear to have drawn them on the belly, and cut them accordingly. From the foregoing remarks upon the various portions of the Violin it may be assumed that the reader has gained sufficient insight into the process of its manufacture to enable him to dispense with a more minute description of each stage. In conclusion, I cannot refrain from cautioning possessors of good instruments against entrusting them into the barbaric hands of pretended repairers, who endeavour to persuade them into the belief that it is necessary to do this, that, and the other for their benefit. The quack doctors of the Violin are legion--they are found in every town and city, ready to prey upon the credulity of the lovers of Fiddles, and the injury they inflict on their helpless patients is frequently irreparable. Unfortunately, amateurs are often prone to be continually unsettling their instruments by trying different bars, sound-posts, &c., without considering the danger they run of damaging their property instead of improving it. Should your instrument need any alteration, no matter how slight, consult only those who have made the subject a special study. There are a few such men to be found in the chief cities of Europe, men whose love for the instrument is of such a nature that it would not permit them to recommend alterations prejudicial to its well-being. SECTION III Italian and other Strings