Show explorers helpers scarce it la not generally known that most african explorers entering the continent from zanzibar have been compelled to fit out chiefly with slaves hired from their zanzibar masters A few weeks ago the british antislavery issued a against thia practice and called attention to the fact that the expedition tion which H H johnston bad just led into the country was made up of slaves the sultan of zanzibar lias now issued a decree forbidding the enlisting of slaves on these expeditions there is accor angly a great scarcity of labor a and the german east mcany cannot get all the men y need london letter |