As to these, which are my own sole property, I seriously enjoin my executor and representative to follow my instructions to the letter:-- "'(1) Professor Stein will take care to be accompanied by a competent witness, when he opens the safe in the wall.
"'(2) The witness will take down in writing, from the dictation of Professor Stein, an exact list of the contents of the safe.

These are:--Bottles containing drugs, tin cases containing powders, and a small medicine-chest, having six compartments, each occupied by a labeled bottle, holding a liquid preparation.
"'(3) The written list being complete, I desire Professor Stein to empty every one of the bottles and cases, including the bottles in the medicine-chest, into the laboratory sink, with his own hands.

He is also to be especially careful to destroy the labels on the bottles in the medicine-chest.

These things done, he will sign the list, stating that the work of destruction is accomplished; and the witness present will add his signature.

The document, thus attested, is to be placed in the care of the Secretary to the University.
"'My object in leaving these instructions is simply to prevent the dangerous results which might follow any meddling with my chemical preparations, after my death.
"'In almost every instance, these preparations are of a poisonous nature.