Memoranda of methods employed by
fishermen for "barking" and in
other ways preserving nets and
sails,

(Also, with slight additions, in Re-
port of U. S. Commissioner of

Fish and Fisheries for 1882; 10,
P. 295),

1883,

5, P.430

Cultivator and Country Gentleman

On the harm done by earth worms, 1882,

47, p. 108

A hint for fruit preservation,

Harvard Register

Feb., 1880,

1, p. 88

I, p. III

2, p. 63

Some of the uses of agricultural
study,
The agricultural school as a prepara-
tion for the study of medicine, June, 1880,

Bussey School of Agriculture and
Horticulture,
Agricultural education a means of
political enlightenment,

Feb., 1881,

June, 1881, 3, p. 332

Miscellaneous

Cherry blossoms destroyed by squirrels, Nature,

Epsom salts versus strawberries,

Nov., 1875, 12, p. 26

American Journal Pharmacy, July, 1878, 8, p. 321 An item of history as to the idea of making the parts of guns interchangeable, Journal Franklin Institute,

Sur le substitution du verre soluble au savon resineus de fabrication des savon ordinaires, Repert. Chim. Appl.,

Nov., 1884, 118, p. 385

Rural New Yorker

Reclamation of bog-land by the German method of burying with gravel,

1863, 5, p. 5

Feb., 1880, 39, p. 101

Experiments on gravelled bog-land, Oct., 1880, 39, p. 686

by reflection along a river bank, July, 1883,

2, p. 37

A popular prejudice: The mad stone, Aug., 1885,

6, p. 163

Books

The result of the destructive distillation of bituminous substances. A Report presented to the annual meeting of the American Pharmaceutical Association at New York, Sept. 10, 1860. With an essay on the history of the manufacture of paraffine oils (with Wm. Henry Whitmore). Boston, 1860.

First outlines of a dictionary of solubilities of chemical substances.

Cambridge, Mass.: Sever and Francis, 1864.

*A manual of inorganic chemistry (with Chas. W. Eliot). New York: Ivison, Phinney, Blakeman & Co., 1866.

*A compendious manual of qualitative chemical analysis (with Chas.
W. Eliot). New York City (published by the authors), 1868.
A cyclopedia of quantitative chemical analysis. Part I. Boston and
Cambridge: Sever, Francis & Co., 1870. Part II, Boston: John
Allyn, 1873.

*

Agriculture in some of its relations with chemistry. Volumes I and II. New York: Charles Scribner's Sons, 1887.

* These publications have passed through several editions.

L. W. F.

ON THE BEHAVIOR OF KERATIN SULFUR AND
CYSTIN SULFUR, IN THE OXIDATION OF
THESE PROTEINS BY POTAS-
SIUM PERMANGANATE. I*

TH. LISSIZIN

(Laboratory of Medical Chemistry, University of Moscow, Russia.)

Introduction. Previous researches on the products formed from proteins in general and from keratin in particular, by the action of potassium permanganate, give almost no indication of the fate of the sulfur in this oxidation process. Since it is now known, as a result of Maly's1 investigations, that the total sulfur of egg-white remains in oxy-proto sulfonic acid, during permanganate oxidation, it is natural to ask: how does the sulfur of keratin, and of other sulfur-yielding albuminoids, behave in such oxidation? Following a suggestion of Prof. Dr. Vl. Gulewitsch, I have undertaken the oxidation of human hair and of cystin, and have investigated the oxidation-products in relation to the sulfur content.

Experimental. A. First I determined the sulfur-content of dry, fat-free, human hair.

I. 0.4106 gm. of human hair was fused with a mixture (1:8) of potassium hydroxid and potassium nitrate, over a small alcohol flame. The fused mass was dissolved in water; the solution was acidified with hydrochloric acid, after the addition of a few drops of bromin water, and evaporated to dryness on a water-bath; the residue was dissolved in water, filtered, precipitated in the usual way with barium chlorid, and the precipitate ignited and weighed. The amount of barium sulfate obtained was 0.1661 gm. (0.02282 gm. sulfur). The hair contained, therefore, 5.56 percent of sulfur.

Then the sulfur-content of the oxy-proto sulfonic acid derived from the hair was determined. For this purpose I took 200 gm. of