Abstract: A casing structure of a water-cooled internal combustion engine includes a casing member defining an oil pump chamber and a water pump chamber. A rotor of an oil pump is inserted into the oil pump chamber and an impeller of a water pump is inserted into the water pump chamber. A cover member covers the casing member.

Abstract: A casing structure of a water-cooled internal combustion engine includes a casing member defining an oil pump chamber and a water pump chamber. A rotor of an oil pump is inserted into the oil pump chamber and an impeller of a water pump is inserted into the water pump chamber. A cover member covers the casing member.

Abstract: A solid tantalum electrolytic capacitor is formed by a method comprisinganodizing a tantalum sintered body for substantial dielectric film growth in a substantially aqueous electrolyte;anodically treating said anodized tantalum body in at least one fused salt selected from the group of nitrates of alkali metals, nitrates of alkaline earth metals and nitrites of alkali metals with an applied voltage which is as high as possible but within a range wherein capacitance-decrease of the anode formed in the aqueous electrolyte is not caused; andanodically treating said fused salt-treated tantalum body in a substantially aqueous electrolyte with an applied voltage which is as high as possible but within a range wherein re-anodization will not occur, the temperature of said fused salt being in the range of 250.degree. C. to 350.degree. C.