Mr. STUDEBAKER. Yes. Mr. BALL. How many different kinds of powder do you have? Mr. STUDEBAKER. Well, we have a gray powder that we use for lifting prints and use under an ultra-violet light and we have a black volcano powder that we use on white or grey surfaces, and then just recently we purchased this new powder--it's a magnetic powder. It's a new type of powder that you just use something like a pen to lift your powder out of the jar that it's in and it will lift a print off of a paper better than your regular dusting powder. It's more accurate in lifting a print than anything I have ever seen. It's a new type powder--a magnetic powder is what it is, and they have a jet black and a gray and a silver-gray and different types of powder in there that you can use on different types surfaces. Mr. BALL. By "lifting the prints," you mean it stands out? Mr. STUDEBAKER. Raising the print up, raising the invisible print which is a latent print and it will raise the moisture out of the paper that it is pressed on. It takes 7 pounds of pressure to leave a latent fingerprint and the moisture in your fingers, in the pores of your skin, is what leaves the print on the paper, but it is invisible until you put your powder on there and then it raises it. Mr. BALL. Now, on this day when you went to the Texas School Book Depository Building, did you go directly to some particular floor? Mr. STUDEBAKER. We went to the entrance and they said it was on the sixth floor and we went directly to the sixth floor. Mr. BALL. Then, were you directed to some place on the sixth floor, as soon as you arrived there? Mr. STUDEBAKER. No; they hadn't found anything when we got there. Mr. BALL. After you were there a little while, did somebody find something? Mr. STUDEBAKER. They found the empty hulls in the southeast corner of the building--they found three empty hulls and we went over there and took photographs of that. Mr. BALL. Do you have that photograph with you? Mr. STUDEBAKER. Yes. Mr. BALL. Could I see it, please? Mr. STUDEBAKER. Now, I took two of the photographs and Lieutenant Day took two. We took double shots on each one. These are the ones I took myself--these pictures. There's the two pictures that I took. This one was right before anything was moved. There is a hull here, a hull here, and a hull over here. Mr. BALL. Now, this picture you have just identified as the picture you took, we will mark it as Exhibit "A" in your deposition. Mr. STUDEBAKER. Yes, sir. (Instrument referred to marked by the reporter as "Studebaker Exhibit A," for identification.) Mr. STUDEBAKER. Yes, sir; now, on this negative right down here in the bottom corner of this negative, there is another hull--you can just barely see the tip of it right here, and when this picture was printed, the exposure of the printing left this out, but I have one--I didn't know this was like that, but I have another one that shows this hull this way.