Observations Upon Barberry Flowers

Some Observations upon Spirostomum

CONTENTS. PAGE 1. H I S T O R I C A L 3 9 2 2. M A T E R I A L A N D M E T H O D S . . . . . . . 3 9 3 F i x a t i o n 3 9 3 S t a i n i n g 3 9 4 O b s e r v a t i o n s o n L i v i n g S p e c i m e n s . . . . . 3 9 4 F e e d i n g M e t h o d s . . . . . . . . 3 9 5 3. O B S E R V A T I O N S O N T H E M O R P H O L O G Y O F S P I R O S T O M U M A M B I G U U M 3 9 5 C o n t r a c t i l e...

Further Observations upon "Dermal Leishmanoid"

A vkry considerable number of cases of this condition are now referred to this department for diagnosis from Colonel Acton's skin outpatient clinic at the Calcutta School of Tropical Medicine since attention was first drawn to it, and at least two fresh cases are seen every week. In the early stage of the disease, when the lesions consist of white, non-pigmented tiny spots on the skin, it is ve...

Observations upon the movements of the eyelids.

Clinical and Experimental Observations upon General Paralysis

Some observations on the effect of colchicine upon Salmonella typhosa.

Colchiciiie, a highly toxic plant alkaloid, is used by geneticists for the production of polyploidy in plants. While mitosis and cell division are suppressed, the multiplication of the chromosomes may not be interrupted. Ostergren (1951) stated that the spindle is disorganized by colchicine, and that the chromosomes do not form a metaphase plate but are distributed at random over the cell or cl...