Discussion on Active Immunization—Some Present-Day Problems

[Present-day problems in toxicology].

Some Present-day Problems of Zoology Teaching.

The American Association for the Advancement of Scientific Apparatus and Laboratory Methods: Science: A New Spring Balance for Measuring Water ConSome Present-Day Problems of Zoology Teachtent of Snow: GEORGE D. CLYDE ....... .................. 189 ing: PROFESSOR WILLIAM A. RILEY ............................ 169 Planes of Lateral Corrasion: PROFESSOR DOUGLAS Special Articles: JOHNSON ...... 174...

Discussion: Recent Common Ancestors of All Present-day Individuals

It is a pleasure to be able to comment on such an interesting and insightful paper. Demographic properties of population genetics models have been of interest for more than 50 years, and suddenly we have a sharp new perspective on properties of a diploid Wright–Fisher model. The results in Chang’s paper are all the more interesting for their contrast with the analogue for haploid (that is, sing...

Some Present Day Reclamation Problems: an Industrialist's Viewpoint

The Present Day Treatment

In the last three or four years the treatment of diabetes has been greatly simplified, and the introduction of insulin has enabled the general practitioner to treat diabetes with a considerable degree of success. Yet there still appears to exist some confusion as to the indications and contraindications for certain well established therapeutic measures in the management of diabetes. It is the p...