TABLE III.

For Reference.

SYMBOLS EMPLOYED.	MANUFACTURER.		OIL.
	NAME.	LOCATION.	KIND.	NAME.	SOURCE.
	NAME.	LOCATION.	KIND.	NAME.	GENERIC.	SPECIFIC.
[B]E. K. w	Ezra Kelley	New Bedford, Mass.	Watch	Superfine	Animal	Porpoise jaw or blackfish—melon
[B]W. F. N. w	W. F. Nye	New Bedford, Mass.	Watch	Superior	Animal	Porpoise jaw or blackfish—melon
[A]D. C. S. w	D. C. Stull	Provincetown, Mass.	Watch	Superfine	Animal	Porpoise jaw or blackfish—melon
[A]D. C. S. ch	D. C. Stull	Provincetown, Mass.	Chronometer	Superfine	Animal	Porpoise jaw or blackfish—melon
[A]D. C. S. cl	D. C. Stull	Provincetown, Mass.	Clock	Superfine	Animal	Porpoise jaw or blackfish—melon
[B]W. C. w	W. Cuypers	Dresden, Germany	Watch	Superfine	Animal	Bone
[A]B. & K. w	Breitinger & Kunz	Philadelphia, Pa.	Watch	Superfine	Animal	Bone
[A]S. B. & Co. wc	Stevenson Bro. & Co.	Philadelphia, Pa.	Watch & clock	Album	Mineral	Neutral
[A]C. L. Co. w	Chem. Lub'g Co.	Brooklyn, N. Y.	Watch	Perfect	Mixed	Neutral & —— ?
[A][C]C. L. Co. No. 1	Chem. Lub'g Co.	Brooklyn, N. Y.	Lubricating	No. 1 Synolene	Mineral	Neutral
[A][C]Glyc	Bullock & Crenshaw	Philadelphia, Pa.	Lubricating	Glycolene	Mineral	Neutral
[B][C]Alb. f	McKesson & Robbins	Philadelphia, Pa.	Lubricating	Fluid alboline	Mineral	Neutral
[B][C]Alb. s	McKesson & Robbins	Philadelphia, Pa.	Lubricating	Solid alboline	Mineral	Paraffine
[B][C]Sp	——?	——?	Lubricating	——?	Animal	Sperm, whale
[B][C]Ol	——?	——?	Lubricating	——?	Vegetable	Olive

[Note A: Obtained as sample from manufacturer.]

[Note B: Purchased in open market.]

[Note C: Not sold as watch oil.]

4. On hearing of these experiments, others in the profession may be tempted to make similar or other investigations and publish them.

5. In that case, if the results of many experiments demonstrate the superiority of one particular kind of oil, the whole profession will be profited thereby.

6. The manufacturers of oils may be caused to exert their utmost to keep abreast of the times, and will see for themselves in what way their oils may not fulfill the required conditions, thereby being the better prepared to overcome the difficulties with which they meet.

For the sake of convenience the author has tabulated a list of the oils which he has subjected to various tests, showing the name, kind and source of each oil tested; also those which were obtained as samples, and those which were purchased in open market, as well as those which were not sold as watch oils, but which may be tried.

This is shown in table III.

77. The Action Of Oils On Brass has been determined by the author by using a piece of good sheet brass into which suitable recesses were made for the retention of the various oils. This plate was submitted to the action of the air at temperatures varying from 24° to 37.5° C. (about 76° to 100° F.), for 100 days.

The results of this test are shown in Table IV. A further test, under different conditions, gave results as shown in Table V.