ECENT ADVANCES in our knowledge commcerniisg the formatiomi amid dissolution of clots has emphasized the importanice of in vitro coagulation studies imi diagnosis and treatment. These studies geiserally involve one basic observatioms, i.e., the time necessary for the formation or dissolution of a visible clot. Technics based on this observation give no information about the quality of the clot,...

r1-1H1 I)IAGNOSIS OF HEMATOLOGIC I)YSCHASIAS is ultimately I resolved to the microscopi(’ identification amid characterization of the cells of the l)boOd and bone marrow. ()ften the delineation between miormal and pat.hologic cell forms is dependent upon mimiute alterations in cellular morphology. The relative ease of visualization afforded by the phase contrast microscope for the study of the ...

Amid the flurry of grant writing and experimentation, statistical analysis sometimes gets less attention than it requires. Here, we describe fully the considerations that should go into the employment of the statistical two-sample t test.

LTHOUGII MUCH HAS BEEN WH1TTEN 55l)OUt the blood muorphology an(1 blood chemuistry its lead poisonimig, the (Flanges in the bomie marrow have received comparatively little (omisideratiomi. So far as we cams aseertaims, the literature up to date contaimss 20 papers’2#{176} deahimig in variouS ‘ays with the bone marrow iii humnan lead poisoning, but relatively few observers5 ‘ . “ . ‘ . ‘9 have h...