ART. 23] CLASSES. 549

in this State; and for forming, laying out and maintaining
cemeteries in this State.

1888, art. 23, sec. 19. 1868, ch. 471. sec. 19. 1882, ch. 375.

21. Class 6. For carrying on in this State any kind of manu-
facturing, ship-building, mechanical, industrial or chemical
business, and for the sale, transportation, or other disposition
of the products thereof. For manufacturing, furnishing and
selling hot water or steam for motive power, heating, cooking
or other useful applications in the streets and public and private
buildings of any city, village or town in this State; and such
corporation shall have the power to lay pipes or conductors for
conducting hot water or steam through the streets, avenues,
lanes, alleys, squares and highways in such city, village or
town, with the consent of the municipal authorities of said city,
town or village, and under such reasonable regulations and con-
ditions as they may prescribe.

Electric Light Co. v. Frederick City, 84 Md. 605.

1902, ch. 271, sec. 19s.

Class 6 A. Corporations formed under the last clause of sec-
tion 21 shall have power to furnish refrigeration as well as heat.

1890, ch 134, sec. 19 A, Class 6 A.

22. Class 7. For the purpose of carrying on the business of
printing, publishing or selling books, pamphlets or news-
papers, or of carrying on the general business of a job printing

office.

1894, ch. 599, sec. 20 A, Class 7 A.

23. Class 8. For conducting or carrying on in this State and
elsewhere, any lawful wholesale or retail trading, commercial
or mercantile business, where the principal office and place of
business of the corporation are located in this State.

1888, art. 23, sec. 20, 1868, ch. 471, sec. 20.

24. Class 9. For conducting any kind of mining business in
this State, and for selling or otherwise disposing of the products
of said business where the principal office of said corporation
is located in this State.

Ibid. sec. 21 1868, ch. 471, sec. 21.

25. Class 10. For washing, dressing, smelting and other-
wise preparing for and bringing to market and selling the ores